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This weekend, Curiosity lands on Mars. That's the name of a one-ton roving robotic laboratory, part of NASA's four-ton Mars Science Laboratory spacecraft now hurtling toward the planet.

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Transit of Venus highlights age of wondrous scientific activityupdated: Tue Jun 05 2012 21:56:00

Tonight, Tuesday, June 5, as the sun set on the East Coast, the planet Venus began its "transit" across the face of the sun. Pay close attention: Barring a miracle of future medicine, this is your only chance to witness such a crossing. The next one will take place in 2117.

Annular solar eclipse in western U.S.updated: Sun May 20 2012 19:05:00

An annular solar eclipse will be visible in the western U.S on May 20. The next one won't happen in the U.S. until 2023.

Solar eclipse projects 'ring of fire' across Asia, Pacificupdated: Sun May 20 2012 19:05:00

The shadow of the moon started sweeping across the globe from Hong Kong to the Texas Panhandle as a rare annular solar eclipse began Monday morning in Asia.

Upcoming solar eclipse to project 'ring of fire'updated: Sat May 19 2012 03:27:00

Thousands of people are planning viewing parties for the upcoming annular solar eclipse, a rare event in which the sun will appear as a thin ring behind the moon.

Weekend solar eclipse to project 'ring of fire'updated: Fri May 18 2012 21:30:00

Thousands of people are planning viewing parties in the western United States for Sunday's annular solar eclipse, a rare event in which the sun will appear as a thin ring behind the moon.

Company aims to mine resource-rich asteroids updated: Tue Apr 24 2012 21:05:00

Eric Anderson and Peter Diamandis pioneered the business of sending millionaire tourists to space. Now they want to mine asteroids for what they say will be tens of billions of dollars worth of resources annually for use on Earth and beyond.

NASA discovers planet similar to Earthupdated: Mon Dec 26 2011 07:33:00

Kepler-22b is the first planet in the "habitable zone" with liquid water on its surface discovered by NASA's Kepler mission.

Two new Earths and the search for lifeupdated: Mon Dec 26 2011 07:33:00

Americans were enthralled by fake reports of an alien invasion in the Orson Welles "War of the Worlds" radio broadcast on Halloween Eve in 1938. Hundreds of science fiction movies from the 1902 silent epic "A Trip to the Moon" (featured in the current film "Hugo") to "Star Wars" to this year's "Cowboys and Aliens" have fed a deep curiosity about intelligent beings elsewhere in the universe.

West Coast had best seat for total lunar eclipseupdated: Sat Dec 10 2011 16:29:00

The moon disappeared from view along the U.S. West Coast on Saturday amid a total lunar eclipse.

Keep Hubble successor on trackupdated: Tue Dec 06 2011 06:06:00

Nearly everyone I meet has heard of the Hubble Space Telescope. Many have seen its beautiful images of the birthplace of new stars and planetary systems, or of the "gravitational lenses" that reveal a mysterious "dark matter" that dwarfs the amount of matter bound up in stars or galaxies.

Giant asteroid passes close to Earth updated: Tue Nov 08 2011 19:19:00

An asteroid the size of an aircraft carrier passed within the moon's orbit Tuesday, the closest approach by an object that large in more than 30 years.

Asteroid to pass close to Earthupdated: Tue Nov 08 2011 19:19:00

Kevin Yates of the Near Earth Objects Information Centre discusses an asteroid that is to pass close to Earth.

Don't call our satellite 'space junk'updated: Sun Oct 30 2011 09:20:00

Last weekend, another large piece of "space junk" tumbled to Earth, perhaps in Southeast Asia. Many people -- if they noted the event at all -- probably worried about being hit on the head, even though the odds are overwhelmingly against such a catastrophe (trillions to one).

Scientists studying universe's expansion win Nobel Prize in Physicsupdated: Tue Oct 04 2011 12:14:00

The astounding discovery that our universe apparently is expanding at an accelerating rate some 14 billion years after the Big Bang has earned three scientists the 2011 Nobel Prize in Physics, the Royal Swedish Academy of Sciences announced Tuesday.

A good planet is hard to findupdated: Sun Aug 21 2011 10:14:00

It was much too late on a Tuesday when a fellow astronomer friend and I found ourselves catching a cab back to Berkeley, having missed the last train home. My friend promptly dozed off in the taxi, leaving me to chat with our driver -- who wondered how we could be out so late with jobs to go to in the morning.

Finding planets around other starsupdated: Sun Aug 21 2011 10:14:00

Lucianne Walkowicz discusses the techniques she is using to find planetary systems, including those similar to Earth's.

Recent solar flare may disrupt your GPSupdated: Mon Aug 08 2011 14:02:00

We're nearing the peak of the 11-year solar cycle, so double-check your GPS and watch where you're going.

Heavenly discoveries, earthly inventionsupdated: Tue Aug 02 2011 08:47:00

Astronomers just discovered the largest reservoir of water ever, roughly 140 trillion times the volume of the Earth's oceans. With severe drought afflicting Africa, Asia and the southern United States, you might ask whether this offers a solution to earthly afflictions.

Atlantis' final landingupdated: Thu Jul 21 2011 17:01:00

NASA celebrates as shuttle Atlantis returns home from its final mission.

Space is still the new frontierupdated: Thu Jul 21 2011 17:01:00

Atlantis, the last space shuttle, returned to Earth on Thursday and will go to its post-retirement gig at the Kennedy Space Center Visitor Complex. After more than 30 years and 135 shuttle flights by literally hundreds of astronauts, NASA has reason to be proud.

Tiny fourth moon discovered in Pluto's orbitupdated: Wed Jul 20 2011 11:04:00

While searching for rings around the dwarf planet Pluto, NASA astronomers made an unintentional discovery -- Pluto has a fourth moon.

Black holes abound in early universeupdated: Wed Jun 15 2011 14:20:00

Black holes may be featured in "Star Trek" and "Event Horizon," but they're not just the stuff of science fiction.

The world's biggest telescopeupdated: Thu Jun 02 2011 14:50:00 gets a close-up look at the largest telescope on Earth and meets the scientists behind it.

The biggest telescope on Earth reveals the universe's farthest reachesupdated: Thu Jun 02 2011 14:50:00

From a quiet swath of English countryside, some one and a half hours outside of London, researchers are receiving radio messages from the farthest reaches of the universe.

Space shuttle: What have we learned?updated: Fri Apr 29 2011 15:08:00

When the space shuttle Endeavour blasts off, it will mark the orbiter's last voyage and the second-to-last mission in the 30-year-long space shuttle program.

Giffords travels to attend shuttle launchupdated: Fri Apr 29 2011 13:53:00

CNN's Elizabeth Cohen describes how Rep. Gabrielle Giffords is able to fly, despite her head injury.

Budget cuts curtail search for alien lifeupdated: Tue Apr 26 2011 10:55:00

Interstellar radio has lost one of its most avid listeners.

NASA finds new planetupdated: Tue Jan 11 2011 14:16:00

NASA Researcher Natalie Batalha spoke to CNN's Kristie Lu Stout about a new planet outside our solar system.

Why I'm dreaming of a white-noise Christmasupdated: Fri Dec 24 2010 09:43:00

While Christians celebrate the birth of Jesus at Christmas, atheists may wonder if there is another birth they might be able to commemorate.

Total lunar eclipse gives heavenly showupdated: Tue Dec 21 2010 10:32:00

Stargazers who were willing to give up a little sleep got to catch the last lunar eclipse of 2010 early Tuesday.

Watch lunar eclipse in under a minuteupdated: Tue Dec 21 2010 10:32:00

Missed the total lunar eclipse last night? With the help of a little video magic, watch it happen much faster.

Africa's eye to the universeupdated: Wed Dec 01 2010 07:18:00

CNN's Nkepile Mabuse visits the southern hemisphere's largest telescope.

Astronomers: Newly discovered planet may be able to support lifeupdated: Fri Oct 01 2010 10:04:00

Astronomers have discovered a new planet that just may be able to support life in a nearby solar system a mere 20 light years from Earth.

Life on another planet?updated: Fri Oct 01 2010 10:04:00

Astronomer Derrick Pitts talks about the possibility of life on a recently discovered planet.

Super Harvest Moon: Autumn phenomenon is a rare treatupdated: Thu Sep 23 2010 02:19:00

Tonight is the night of the Super Harvest Moon.

In one day, two asteroids buzz the Earthupdated: Wed Sep 08 2010 22:02:00

Two small asteroids passed within the moon's distance from the Earth about 12 hours apart on Wednesday, NASA confirmed.

Kepler space telescope finds pair of distant planets, NASA saysupdated: Thu Aug 26 2010 23:32:00

Two planets slightly smaller than Saturn have been discovered orbiting a distant star, a first for NASA's Kepler space telescope, whose mission is to look for signs of planets passing in front of stars, the space agency said Thursday.

Meteor shower will wow gazers overnightupdated: Fri Aug 13 2010 03:15:00

There's still time to charge that laptop and brew some coffee before the Perseid meteor shower peaks predawn Friday.

Scientists discover monster starupdated: Wed Jul 21 2010 17:54:00

Imagine a star so luminous that it would burn the Earth up if it were anywhere near, a star that outshines the sun as much as the sun outshines the moon. A monster even in the abyss of space.

Probe takes detailed pictures of crater-covered asteroidupdated: Mon Jul 12 2010 11:49:00

A European space probe headed toward its next target Sunday after sending back detailed images of an asteroid that scientists hope will increase understanding of how the solar system evolved.

Solar eclipse predicted at same time as World Cup finalupdated: Sat Jul 10 2010 02:36:00

It is unlikely anything would fully eclipse the World Cup final, but the universe is giving it a shot.

Icy asteroid may shed light on where Earth's water came fromupdated: Thu Apr 29 2010 04:49:00

An icy asteroid orbiting the sun between Mars and Saturn is adding credence to theories that Earth's water was delivered from space, according to a report published in the new issue of the science journal Nature.

Hubble's 20th anniversaryupdated: Mon Apr 26 2010 18:37:00

A former astronaut and a NASA administrator recount the successful history of the Hubble Space Telescope.

Hubble marks 20 years in spaceupdated: Mon Apr 26 2010 18:37:00

For 20 years, it has circled quietly above us, capturing a dark, secret world billions of light years away.

A sneak peek of 'Hubble 3D'updated: Fri Mar 19 2010 10:15:00

IMAX explores the legacy of the Hubble Space Telescope and its impact on our views about the universe.

NASA launches Solar Dynamics Observatoryupdated: Thu Feb 11 2010 12:11:00

NASA has launched an Atlas V rocket carrying a probe that the agency says will study the sun "in greater detail than ever before."

Solar observatory lifts offupdated: Thu Feb 11 2010 12:11:00

NASA's solar observatory blasts off on a mission to study the sun and its effects on Earth.

Launch of rocket with solar probe reset for Thursdayupdated: Wed Feb 10 2010 12:07:00

NASA has postponed for one day the scheduled launch of a rocket carrying a solar probe.

Hubble, sky survey catch rare asteroid crash, NASA saysupdated: Tue Feb 02 2010 15:27:00

A mysterious X-shaped pattern of space debris seen by NASA's Hubble Space Telescope was probably two asteroids that collided, scientists said Tuesday.

Hubble peers back 13.2 billion years, finds 'primordial' galaxiesupdated: Wed Jan 06 2010 09:37:00

NASA's Hubble Space Telescope has reached back 13.2 billion years -- farther than ever before in time and space -- to reveal a "primordial population" of galaxies never seen before.

Life not on earth?updated: Tue Jan 05 2010 04:29:00

Following the success of Avatar, Lisa Kaltenegger explains how close we are to discovering new worlds.

Real life 'Avatar' moon waiting to be found, scientists sayupdated: Tue Jan 05 2010 04:29:00

The portrayal of alien life on far-flung planets has been a favorite storyline for filmmakers down the years and is a perennial hit with audiences. "Avatar" has proved no different with the film doing record business at the box-office.

Scientists spot nearby 'super-Earth'updated: Wed Dec 16 2009 17:12:00

Astronomers announced this week they found a water-rich and relatively nearby planet that's similar in size to Earth.

NASA launches infrared telescope to scan entire skyupdated: Mon Dec 14 2009 10:28:00

NASA launched a new telescope into space on Monday to scan the cosmos for undiscovered objects, including asteroids and comets that might threaten Earth.

NASA 'WISE' telescope launchesupdated: Mon Dec 14 2009 10:28:00

NASA launches new infrared telescope to scan the cosmos for undiscovered objects.

32 planets discovered outside solar systemupdated: Mon Oct 19 2009 16:30:00

Thirty-two planets have been discovered outside Earth's solar system through the use of a high-precision instrument installed at a Chilean telescope, an international team announced Monday.

NASA's strike on moon worked, mission official saysupdated: Fri Oct 09 2009 11:02:00

NASA said Friday's rocket and satellite strike on the moon was a success, kicking up enough dust for scientists to determine whether or not there is water on the moon.

Successful crash into moonupdated: Fri Oct 09 2009 11:02:00

Listen as NASA crashes a spacecraft and the upper stage of a rocket on the moon in a search for water.

NASA set to crash on the moon -- twiceupdated: Thu Oct 08 2009 16:42:00

Two U.S. spacecraft are set to crash on the moon Friday. On purpose. And we're all invited to watch.

First rocky planet found outside solar systemupdated: Wed Sep 16 2009 15:17:00

Scientists have discovered the first confirmed Earthlike planet outside our solar system, they announced Wednesday.

'Butterfly Nebula' catches Hubble's attentionupdated: Thu Sep 10 2009 12:02:00

Forget Hollywood special effects or Impressionist paintings -- some of the most stunning images are created by the mysterious and often violent forces in the universe.

What's a planet? Debate over Pluto rages onupdated: Tue Aug 25 2009 10:22:00

For one of the farthest, coldest places in the solar system, Pluto sure stirs a lot of hot emotions right here on Earth.

Telescopes to show universe soon after Big Bangupdated: Tue Aug 18 2009 14:30:00

It may not be possible to travel back in time, but seeing stars and galaxies as they looked millions or even billions of years ago is no problem thanks to telescopes, the closest thing we have to time machines.

Hubble reawakens, snaps image of Jupiter scarupdated: Mon Jul 27 2009 11:49:00

In an unusual step, NASA scientists interrupted testing of the refurbished Hubble Space Telescope to aim the orbiter's camera at Jupiter and capture an image of the planet's mysterious new scar.

Science vs. superstitionupdated: Fri Jul 24 2009 02:30:00

Are solar eclipses a scientific marvel or a superstitious sign? CNN's Mallika Kapur reports from Mumbai, India.

NASA Earth pictures show extent of eclipseupdated: Fri Jul 24 2009 02:30:00

NASA has released new pictures of the Earth showing the vast extent of Wednesday's spectacular solar eclipse.

A total solar eclipseupdated: Thu Jul 23 2009 22:17:00

Darkness fell across parts of China and India as a total solar eclipse passed across the world's most populous countries.

Darkness falls in Asia during total eclipse, luring massesupdated: Thu Jul 23 2009 22:17:00

The longest solar eclipse of the century cast a wide shadow for several minutes over Asia and the Pacific Ocean Wednesday, luring throngs of people outside to watch the celestial spectacle.

India: Claims disabled kids buried during eclipseupdated: Thu Jul 23 2009 14:27:00

Authorities are investigating reports that disabled children in India were buried up to their necks during this week's solar eclipse as a supposed remedy for their handicaps.

Solar eclipse excitement sweeps Asiaupdated: Tue Jul 21 2009 20:18:00

Skywatchers are gathering from parking lots in western India to music festivals on remote Japanese islands to witness what NASA describes as an "exceptionally long" total solar eclipse that will cross half the planet on Wednesday.

Mystery impact leaves Earth-size mark on Jupiterupdated: Tue Jul 21 2009 12:29:00

Jupiter is sporting a new scar after an unseen object hit the gaseous planet this week, NASA scientists say.

Final visit to space telescopeupdated: Mon May 11 2009 16:20:00

CNN's John Zarrella reports astronauts ready to perform final high wire repair to a famous telescope.

Shuttle blasts off for final Hubble fixupdated: Mon May 11 2009 16:20:00

The space shuttle Atlantis blasted off successfully Monday afternoon on NASA's fifth and final repair visit to the Hubble Space Telescope.

Falling into a black holeupdated: Mon Apr 27 2009 08:14:00

A computer simulation illustrates what it would be like to fall into a black hole. Narrated by Andrew Hamilton.

Astronomers take virtual plunge into black holeupdated: Mon Apr 27 2009 08:14:00

Dare to fall into a black hole and you would get vaporized in what is probably the most violent place in the universe. But the journey would yield some amazing sights, though you might need three eyes for the best view of what's going on, new research suggests.

Mysteries of universeupdated: Wed Apr 15 2009 17:05:00

Groundbreaking science experiment recreates the Big Bang to unlock secrets of the universe. CNN's Atika Shubert reports.

Analyzing the 'Cosmic hand'updated: Wed Apr 15 2009 04:02:00

Scientist Patrick Slane speaks to CNN's Don Riddell about the latest image from the heavens.

NASA photos show giant 'cosmic hand'updated: Wed Apr 15 2009 04:02:00

New photographs released by NASA have captured images of a vast stellar formation resembling a human hand reaching across space.

Spacecraft blasts off in search of 'Earths'updated: Sun Mar 08 2009 20:34:00

Calling it a mission that may fundamentally change humanity's view of itself, NASA on Friday launched a telescope that will search our corner of the Milky Way galaxy for Earth-like planets.

Searching for other Earthsupdated: Sun Mar 08 2009 20:34:00

CNN's John Zarrella reports that NASA is starting an unprecedented search for planets where life is possible.

Asteroid passes close to Earthupdated: Tue Mar 03 2009 19:13:00

You had a close encounter with a 40-yard-wide asteroid this week, but the astronomer who first spotted the large rock said it's nothing to worry about.

Galaxy may be full of 'Earths,' alien lifeupdated: Wed Feb 25 2009 22:11:00

As NASA prepares to hunt for Earth-like planets in our corner of the Milky Way galaxy, there's new buzz that "Star Trek's" vision of a universe full of life may not be that far-fetched.

Armchair astronomer discovers unique 'cosmic ghost'updated: Fri Feb 06 2009 10:11:00

Hanny van Arkel was poring over photos of galaxies on the Internet in August 2007 when she stumbled across a strange object in the night sky: a bright, gaseous mass with a gaping hole in its middle.

Black hole found at center of galaxyupdated: Wed Dec 10 2008 05:25:00

German astronomers say they have discovered conclusive proof of a supermassive black hole at the heart of the galaxy.

In search of aliensupdated: Wed Nov 26 2008 12:02:00

Miles O'Brien explores the possibility of intelligent life beyond Earth.

Probing the cosmos: Is anybody out there?updated: Wed Nov 26 2008 12:02:00

From a remote valley in Northern California, Jill Tarter is listening to the universe.

Astronomers capture first images of new planetsupdated: Fri Nov 14 2008 10:08:00

The first-ever pictures of planets outside the solar system have been released in two studies.

Asteroid to be harmless fireball over Earthupdated: Mon Oct 06 2008 20:14:00

A meteor, or shooting star, is usually the size of a pebble, or even a grain of sand, burning up in the atmosphere. Haumea: Our Newest Dwarf Planetupdated: Sun Sep 21 2008 01:00:00

A newly discovered dwarf planet in the solar system has been given a Hawaiian name: Haumea

The particle experimentupdated: Thu Sep 11 2008 08:15:00

CNN's Becky Anderson goes inside the tunnels of the biggest scientific experiment ever attempted.

Large Hadron Collider fired up in 'God particle' huntupdated: Thu Sep 11 2008 08:15:00

Scientists Wednesday applauded as one of the most ambitious experiments ever conceived got successfully underway, with protons being fired around a 27-kilometer (17-mile) tunnel deep beneath the border of France and Switzerland in an attempt to unlock the secrets of the universe. More Planets Like Earth?updated: Tue Jun 17 2008 14:00:00

Scientists have discovered 45 more bodies circling distant suns. And unlike other such exoplanets, these are closer in size to our own

Planning a trip to the sunupdated: Wed May 21 2008 10:32:00

Its heat powers the solar system. Its light makes life on Earth possible. Its gravitational pull keeps planets in orbit around it.

Science seranadeupdated: Wed May 21 2008 09:15:00

Dr. Alan Marscher of Boston University performs his song 'Superluminal Lover' at a conference in Miami in 2005.

Professor makes black hole breakthroughs, balladsupdated: Wed May 21 2008 09:15:00

"Attracted by your gravity, your body's so compact / Pulling me inward, prepare for close contact," Boston University astronomer Alan Marscher sings in his song about a deep-space object known as a black hole. Skywatchers Get Total Lunar Eclipseupdated: Thu Feb 21 2008 05:00:00

The last total lunar eclipse until 2010 occurred Wednesday night, with cameo appearances by Saturn and the bright star Regulus on either side of the veiled full moon

Dangers from secrets and liesupdated: Mon Feb 04 2008 09:55:00

If you know a secret the rest of the world doesn't, it can drive you nuts. From dealing with little white lies to exposing a sexual harasser, consider how, when -- and when not -- to let the cat out of the bag.

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