Science & Astronomy Archive
22 April 2014, 02:00 PM ET
Why can't anything travel faster than the speed of light? Do black holes really suck? And why is the universe expanding? These are just a few of the questions author and astrophysicist Jeffrey Bennett answers in his new book, "What is Relativity?"
22 April 2014, 02:00 PM ET
Many people with a basic knowledge of physics know that Einstein developed the theory of relativity, yet few people actually understand what it means. But author and astrophysicist Jeffrey Bennett relativity should be something anyone can understand.
22 April 2014, 01:58 PM ET
In 2013 and 2014, areas around the globe have experienced record breaking temperatures over extended periods of time. This has led to a diminished water supply, thriving disease carrying insects and fire.
22 April 2014, 10:53 AM ET
Since the start of the 21st century, dozens of incoming asteroids have slammed into Earth, some of them packing far more energy than a city-destroying atomic bomb, a new animation illustrates.
22 April 2014, 09:20 AM ET
Between 2000 and 2013, 26 explosions ranging from 1-600 kilotons have been detected by the Nuclear Test Ban Treaty Organization's network of sensors. -- FULL STORY: http://goo.gl/pKFcCq
22 April 2014, 07:49 AM ET
Today marks the annual celebration of our home planet.NASA has a slew of live events planned to highlight what makes Earth so special. NASA also has many online activities available, too. Here's our NASA Earth Day guide.
22 April 2014, 06:16 AM ET
The Milky Way is a spiral galaxy — but what exactly does it look like? Does it have two, four, or more arms? Astronomers think that now they’re one step closer to the answer.
22 April 2014, 03:40 AM ET
NASA has long held the lead in the exploration of Mars, and that trend will continue, says NASA administrator Charles Bolden.
22 April 2014, 02:24 AM ET
The Triangulum Galaxy (M33) that is about 3 million light-years away from Earth. Among its most distinctive features are ionized hydrogen clouds, which are massive regions of starbirth.
21 April 2014, 06:06 PM ET
Most adults in the United States are not convinced that the universe began with the Big Bang, according to a new Associated Press-GfK poll.
21 April 2014, 04:03 PM ET
Cosmic rays hitting Earth can be trapped in ice, producing radioactive Krypton-81. Scientists have accurately dated a million year old sample through melting ancient ice, and passing the ancient air through an Atom Trap Trace Analyzer.
21 April 2014, 03:47 PM ET
Opportunity has been given a new lease on life after the Red Planet gave the tenacious Mars rover a power-boosting spring clean, blasting dust off its solar panels. Opportunity is still going strong more than 10 years after landing on Mars.
21 April 2014, 03:17 PM ET
A super-bright meteor exploded over the northern Russian city of Murmansk early Saturday morning (April 19), a little more than a year after another airburst lit up the skies above Chelyabinsk, about 1,300 miles to the southeast.
21 April 2014, 01:37 PM ET
The CASIS ARK-1 mission, recently delivered to the ISS, will try to grow Huntington protein crystals for study on Earth. Crystals can grow larger in the microgravity of Low Earth Orbit (LEO).
21 April 2014, 12:59 PM ET
Light pollution not only threatens astronomy, it disrupts wildlife, and affects human health. The yellow glows over cities and towns — seen so clearly from space — are testament to the billions spent in wasted energy from lighting up the sky.
21 April 2014, 07:00 AM ET
The Hubble image, released today, is a 14-hour exposure that shows objects about 1 billion times fainter than the naked eye can see. Most of the visible galaxies lie less than 5 billion light-years away, but some objects are much more distant.
20 April 2014, 08:00 AM ET
At issue is the ability to combine space data with outputs from a global network of seismic, infrasound and hydroacoustic sensors that have been deployed worldwide to provide treaty verification for a nuclear test ban.
19 April 2014, 07:00 AM ET
From five volcanoes erupting at once to a cross-section of the universe, don't miss these amazing space images of the week for April 19, 2014.
19 April 2014, 07:00 AM ET
From a stunning time-lapse of the Milky Way to the Blood moon, don't miss these amazing night sky images by stargazers and Space.com readers.
18 April 2014, 01:52 PM ET
An essential nutrient for life on Earth also cooks up in space, a new study finds.
18 April 2014, 12:30 PM ET
“Ice island B31” is 200 feet thick and 21mi X 12mi. It separated from the Antarctic Pine Island Glacier in Nov. 2013. NASA's Terra and Aqua satellites have been imaging its progress towards open ocean.
18 April 2014, 10:15 AM ET
On Thursday (April 17), NASA announced the historic discovery of Kepler-186f, an Earth-size alien planet 490 light-years from our own world that is located inside the habitable zone of its star. See Space.com's complete coverage of the Kepler-186f find.
18 April 2014, 06:01 AM ET
The discovery of Kepler-186f still falls short of the ultimate prize in exoplanet science: a true "alien Earth." But the first such world may lurk in the data already gathered by NASA's Kepler space telescope, just waiting to be pulled out.
18 April 2014, 06:00 AM ET
A newly discovered planet that has been called 'Earth's cousin' has just been found 490 light-years from Earth.
17 April 2014, 06:16 PM ET
The discovery of the exoplanet Kepler-186f further bolsters the emerging view that Earth is not such a unique place, and that habitable environments may be widespread throughout the galaxy, experts say.
17 April 2014, 06:10 PM ET
A spacecraft circling the Red Planet has spotted NASA's Mars rover Curiosity hard at work on the Martian surface.
17 April 2014, 05:22 PM ET
Data from the Kepler Mission, plus Keck and Gemini North Telescopes confirm Kepler 186f (about 1.1X Earth’s diameter) to orbit near the edge of habitability around an M-dwarf star with 4 other known planets.
17 April 2014, 02:01 PM ET
Ten of the alien worlds that represent our best hope for alien life beyond the solar system, according to the University of Puerto Rico at Arecibo.
17 April 2014, 02:01 PM ET
A rocky planet that could have liquid water at its surface orbits a star 490 light-years away.
17 April 2014, 02:01 PM ET
Scientists have discovered Kepler-186f, the first Earth-size alien planet in the habitable zone of its host star. The so-called 'Earth cousin' just might have liquid water and the right conditions to support life.
17 April 2014, 02:01 PM ET
The alien planet Kepler-186f is a planet only slightly larger than Earth orbiting inside the habitable zone of its red dwarf star. See images and photos of the Kepler-186f planet discovery in this Space.com gallery.
17 April 2014, 02:01 PM ET
It's the brass ring that teams of astronomers from hither to yon have tried to grab: Discovering a planet that sports an environment similar to our own. Finding Earth's cousin. And now, a team of researchers may have done it.