Our Home Planet Earth Archive
21 December 2010, 04:12 PM ET
NASA needs an asteroid-hunting spacecraft to finally get serious about the potential threat of nearby space rocks that could slam into Earth
20 December 2010, 06:08 PM ET
A change in the Earth's orbit, many scientists believe, transformed the "Green Sahara" into what is now the largest desert on the planet.
17 December 2010, 05:15 PM ET
Geophysics milestone may point scientists to source of the inner planet's roiling energy.
16 December 2010, 11:12 AM ET
ESA's SWARM constellation will give scientists a 3-D view of Earth's magnetic field to help shield us from high-energy particles which threaten living creatures and electronics.
16 December 2010, 06:09 AM ET
Comets may contain much less carbon than thought, which could rewrite what role they might have played in delivering the ingredients of life to Earth.
15 December 2010, 06:19 PM ET
A new website lets astronomers — and anyone who likes to watch stuff blow up — calculate the damage a comet or asteroid would cause if it hit Earth.
14 December 2010, 06:02 PM ET
If a big asteroid is streaking toward Earth, a well-placed nuclear explosion could help humanity avert widespread destruction — and not just in the movies.
14 December 2010, 10:32 AM ET
Complex molecules similar to the building blocks of life on Earth may form commonly on the Saturn moon Titan, a new study suggests.
09 December 2010, 02:06 PM ET
Gigantic collisions on Earth, the moon and Mars 4.5 billion years ago injected precious elements such as gold and platinum into the developing worlds, new study suggests.
09 December 2010, 01:33 PM ET
While no place on Earth is exactly like Mars, some spots are quite similar to the Red Planet at different times in its past.
01 December 2010, 05:31 PM ET
The announcement of a NASA press conference slated for tomorrow (Dec. 2) has set the Internet abuzz with rumors that extraterrestrial life has been discovered.
01 December 2010, 06:57 AM ET
Mysterious clouds discovered on Venus could serve as a cautionary tale for a proposed method of combating climate change here on Earth.
19 November 2010, 09:11 AM ET
First Flight for NASA's New Moon Rocket
18 November 2010, 05:26 PM ET
Regular Earth-bound folks can enjoy spectacular views of Earth from space, thanks to a NASA astronaut who's been sharing his photos from the International Space Station via Twitter.
16 November 2010, 09:56 AM ET
Astronomers hunting for Earth-like alien worlds could improve their odds by zeroing in on planets that look blue from afar, just like Earth, a new study suggests.
16 November 2010, 06:33 AM ET
Astronomers hunting for Earth-like alien worlds could improve their odds by zeroing in on planets that look blue from afar, just like Earth, a new study suggests.
15 November 2010, 02:48 PM ET
Our large, natural satellite always presents the same face to the Earth because it completes one orbit of Earth in about the same span of time Earth completes one rotation.
10 November 2010, 02:24 PM ET
Life on Earth may have originated high up in the atmosphere rather than in the surface waters of oceans or pools, a new study suggests.
04 November 2010, 11:36 AM ET
NASA has released the first up close photos ever taken of Comet Hartley 2 by the Deep Impact spacecraft during its Nov. 4 flyby.
04 November 2010, 10:03 AM ET
After a cosmic chase lasting months and eating up millions of miles, a comet-hunting spacecraft finally caught its icy quarry today (Nov. 4).
04 November 2010, 09:08 AM ET
Snowball Earths, eras in which our planet was locked in a global winter, have perplexed researchers studying how our planet unfroze itself.
01 November 2010, 11:47 AM ET
Photos from Japan's beleaguered asteroid mission Hayabusa to visit the asteroid Itokawa and collect samples to be returned to Earth.
27 October 2010, 03:42 PM ET
Cage-like carbon molecules called buckyballs are common in outer space, upping the odds that they delivered to the early Earth key chemicals necessary for life, new research has found.
26 October 2010, 10:30 AM ET
Take a tour of the effect Sputnik, the world's first artificial satellite, has had on science 50 years after its launch.
25 October 2010, 06:31 PM ET
Our solar system's planets vary greatly in size, composition, temperature, chemistry and geology. Here are some notable extreme facts about the planets that orbit our Sun.
14 October 2010, 11:44 AM ET
The discovery of Gliese 581g, an alien planet orbiting in the habitable zone of its parent star, has added new fuel to the debate over the uniqueness of Earth.
08 October 2010, 10:01 AM ET
The Earth will pass through the castoff remnants of an ancient comet Friday (Oct. 8), but the resulting meteor shower will be lackluster at best, experts say.
06 October 2010, 01:01 PM ET
A new look at the sun's connection to Earth's climate has returned some surprising results.
04 October 2010, 03:14 PM ET
A NASA mission to investigate climate change has been pushed back by rocket and spacecraft issues.
04 October 2010, 08:10 AM ET
Mining the moon may turn up a bounty of rare earth elements vital for national security.
30 September 2010, 02:14 PM ET
The edge of our solar system is a much more dynamic place than previously thought, new research suggests.
30 September 2010, 11:08 AM ET
Italian physicists in have created a miniature environment that mimics the conditions of a black hole.
29 September 2010, 08:48 PM ET
When returning to Earth on Russian spacecraft, astronauts are in for some special welcoming traditions – including fur-lined chairs and fresh apples.
28 September 2010, 02:27 AM ET
NASA will gather scientists together Wednesday (Sept. 29) to announce new findings about the edge of our solar system from a spacecraft gazing at the region from its orbit around Earth.
22 September 2010, 06:49 PM ET
Lightning on Venus and Earth may spark in much the same way despite vast differences in the atmospheres of the two planets, scientists say.
21 September 2010, 07:53 AM ET
The autumnal equinox occurs Wednesday, marking the official beginning of a new season for Earth's north and south hemispheres.