Science & Astronomy Archive
18 September 2015, 07:00 AM ET
NASA has been overly optimistic about its manned Red Planet plans in the past. But the agency's current goal of getting astronauts to Mars by the end of the 2030s is eminently achievable, NASA chief Charles Bolden said.
17 September 2015, 06:54 PM ET
Backlit by sunset over Pluto, NASA's New Horizon's probe captured rugged ~11,000ft (3,350m) mountains and wide glaciers of nitrogen ice. To quote Principal Investigator Alan Stern: "Pluto is surprisingly Earth-like...and no one predicted it."
17 September 2015, 05:14 PM ET
In a new video, an enormous cluster of sunspots rotates across the sun's face before gradually separating into several distinct groups, which also fired off a bunch of solar flares.
17 September 2015, 04:37 PM ET
The photo, which New Horizons took during its epic July 14 flyby of Pluto, captures a sunset view. Towering ice mountains cast long shadows, and more than a dozen layers of the dwarf planet's wispy atmosphere are clearly visible.
17 September 2015, 07:31 AM ET
The Square Kilometer Array (SKA), currently planned to begin construction in 2018, could enable the search for intelligent life to piggy-back on other scientific observations, scouring the galaxy with unprecedented precision.
16 September 2015, 05:45 PM ET
The Solar and Heliospheric Observatory (SOHO), a joint effort of NASA and the European Space Agency, spotted comet number 3,000 on Sunday (Sept. 13). The landmark discovery was pulled out of SOHO's database by Worachate Boonplod of Thailand.
16 September 2015, 05:45 PM ET
Daredevil sungrazing comets risk annihilation every time they skim the surface of our star. Here's how the Solar and Heliospheric Observatory tracks these comet interlopers.
16 September 2015, 02:51 PM ET
A slight wobble in the orbit of Saturn's moon Enceladus can only be explained by a global ocean beneath its crust.
16 September 2015, 10:45 AM ET
The NASA/ESA Solar and Heliospheric Observatory captured what is thought to be the Kreutz sungrazer comet's final moments. It was most likely vaporized on closest approach on Sept. 16th, 2015.
16 September 2015, 10:15 AM ET
Smaller and older than the Milky Way, and very close by, the Sculptor Dwarf Galaxy is lurking right in plain sight, easy to miss. But studying the faint satellite galaxy is revealing more about how groups of stars form and evolve.
16 September 2015, 10:00 AM ET
About 280,000 light years from Earth, the Sculptor Dwarf Galaxy contains many very old stars. It’s diffuse nature lets light from very distant galaxies through to the seniors of the La Silla Observatory.
16 September 2015, 07:21 AM ET
A sweeping new panorama from NASA's Curiosity rover shows petrified sand dunes stretching across the jagged Mount Sharp on Mars.
15 September 2015, 01:17 PM ET
The NASA and the European Space Agency's Solar and Heliospheric Observatory (SOHO) has been detecting icy space rocks for two decades. The 3000th new observation came on September 13th, 2015.
14 September 2015, 06:19 PM ET
Hydra, the enormous, reptilian beast in the stars.
14 September 2015, 04:20 PM ET
A satellite glimpsed yesterday's (Sept. 13) partial solar eclipse three times from space. Viewers in South Africa saw it just once, and tracked their experience in new skywatching photos.
14 September 2015, 02:00 PM ET
Something strange is happening on Io: The Jupiter moon's vigorous volcanoes are mysteriously offset from where scientists expected, and its underground magma oceans may be the cause.
14 September 2015, 11:16 AM ET
A partial solar eclipse occurred on Sept. 13, 2015. See photos from the event by skywatchers in South Africa and a satellite in space.
13 September 2015, 07:26 AM ET
The head of NASA’s Osiris-Rex asteroid sample-return probe plans to crowdfund an outreach budget for the mission on Kickstarter by selling a card game."
13 September 2015, 02:37 AM ET
NASA's New Horizons spacecraft beamed home incredible new images of Pluto, scientists found a giant buried ice sheet on Mars and Elon Musk chatted with Stephen Colbert about the future of spaceflight. Here are's top stories of the week. 
12 September 2015, 12:31 AM ET
Science fiction movies about aliens threatening the Earth routinely ascribe them the motive of coming here to steal our resources, most often our water.
11 September 2015, 09:49 AM ET
Theory said small irregular galaxies shouldn’t have concentrations of bass and heavy elements dense enough to give birth to bright clusters of new stars.
11 September 2015, 09:29 AM ET
What makes the moon turn dark and red? Find out in this infographic.
11 September 2015, 09:29 AM ET
How Solar Eclipses Work: When the moon covers up the sun, skywatchers delight in the opportunity to see a rare spectacle.
11 September 2015, 09:20 AM ET
The full moon happens once a month. Find out when.
11 September 2015, 08:45 AM ET
Find out the current moon phases. The moon cycles through eight phases every month.
11 September 2015, 06:00 AM ET
Mercury is a faster spinner than thought, completing a spin on its axis roughly 9 seconds more quickly than scientists previously charted — and that data will help scientists understand more about the planet's molten core.
11 September 2015, 05:27 AM ET
An image released last fall sparked debate over whether or not giant planets might form so close to one another. New evidence suggests they can, making this the first image of planetary birth.
10 September 2015, 06:07 PM ET
New imagery from the NASA's New Horizons' mission has been processed. High detailed views of the Sputnik Planum and the Chaos region give you the perspective from 1,100 miles (1,800 kilometers) above Pluto’s equatorial area.
10 September 2015, 06:00 PM ET
An "over-the-top" complex mix of craters, ice flows, mountains, valleys and apparent dunes coexist in the latest images dispatched from the New Horizons spacecraft's flyby of Pluto.
10 September 2015, 09:01 AM ET
A giant slab of ice as big as California and Texas put together lurks just beneath the surface of Mars between its equator and north pole, researchers say. This ice may be the result of snowfall tens of millions of years ago on the Red Planet.
10 September 2015, 09:00 AM ET
NASA's New Horizons probe found that Pluto's surface is reddish-brown, as is the north polar region of Charon, the dwarf planet's biggest moon. That's no coincidence: The red on both bodies is likely caused by complex compounds called tholins.
10 September 2015, 09:00 AM ET
The "Red Dragon" sample-return mission would grab samples collected by NASA's 2020 Mars rover and send them rocketing back toward Earth, where researchers could scrutinize the material for possible signs of past Red Planet life.