Ever since it was first spotted by Hubble in 2003, the nature of the curious bright spot on Ceres has been an intriguing mystery for scientists. And even as NASA’s Dawn spacecraft approached the dwarf planet earlier this year the bright spot continued to mystify, gradually resolving into first two and then multiple, separate spots as Dawn…
Category: Asteroids
Dawn Emerges from the Darkness to Send New Views of Ceres
After a brief period of silence (due to its position on the dwarf planet’s night side) NASA’s Dawn spacecraft is now sending back images from orbit around Ceres, revealing amazing details of its surface and giving another look at those mystery “bright spots” that have intrigued scientists since their discovery in 2003. The animation above shows Ceres’…
NASA’s Plan to Pluck a Boulder Off An Asteroid and Orbit It Around the Moon
NASA may have its sights set on Mars, but before it can send astronauts to the Red Planet it needs to hone its skills with long-distance, long-duration human spaceflight beyond low-Earth orbit. Enter the “missing link” in exploration evolution: the Asteroid Redirect Mission, or ARM, NASA’s plan for developing the technology and experience for Mars while learning…
Rings Discovered Around an Asteroid
We all know that Saturn is encircled by a system of rings, and perhaps you also know about the fainter rings around Uranus, Jupiter, and Neptune. But today, ESO astronomers have revealed a surprising discovery: there are also rings surrounding the asteroid 10199 Chariklo, a small, distant world orbiting the Sun far beyond Saturn. This makes 250-km-wide Chariklo the fifth…
Vesta’s Formation History? It’s Complicated.
Just when scientists thought they had a tidy theory for how the giant asteroid Vesta formed, a new paper from NASA’s Dawn mission suggests the history is more complicated. If Vesta’s formation had followed the script for the formation of rocky planets like our own, heat from the interior would have created distinct, separated layers…
Galileo’s Visit with an Asteroid, 22 Years Ago Today
Launched on its historic voyage to Jupiter on October 18, 1989, NASA’s Galileo spacecraft also got some good looks at several members of our solar system before it reached the giant planet — and one of them was the 12-mile-long asteroid Gaspra, of which it made its closest pass on October 29, 1991. The image…
Passing 2-Mile-Wide Asteroid Has Its Own Little Moon
On the afternoon of Friday, May 31, 2013, at 4:59 p.m. EDT, the nearly two-mile-wide asteroid 1998 QE2 will pass by our planet at a distance of about 5.86 million km (3.64 million miles)… about 15 times the distance between Earth and the Moon. And although it poses no threat of impacting Earth neither during…
So What Did Asteroid 2012 DA14 Actually Look Like?
Something like this: This video was made from 72 radar observations made on the night of Feb. 15/16, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, CA. The target object, a ~40-meter wide asteroid named 2012 DA14, passed within 17,200 miles (27,680 km) of Earth — coming several thousand…
The Surface of an Asteroid
Bright craters, dark craters… craters shaped like butterflies… they’re all represented here in a panorama made from images acquired by NASA’s Dawn spacecraft, currently orbiting the 330-mile-wide asteroid Vesta. I stitched two images together (using a third for gap fill-in) that were originally acquired by Dawn’s framing camera in October 2011 and released last week. This shows…
Apocalypse? NO. (Despite What Chevy Says)
So the buzz is buzzing about Chevy’s Super Bowl ad and its tongue-in-cheek portrayal of the aftermath from the 2012 Mayan apocalypse. Of course the message is typical — drive a Chevy truck and survive, drive anything else and perish. Which is cute and of course the production value is high, but the problem is…
Giant Asteroid to Approach Earth Jan. 31
It’s huge – 21 miles across! It’s bright – magnitude 8.7, maybe more! And right now it’s coming close to Earth – the closest it’s come in 37 years! Why haven’t they told us about this?!? Well, actually they have. It’s asteroid 433 Eros, and on Tuesday it will come within 16.6 million miles of…
No Doom in 2012: Stop the Insanity!
Now that’s we’re officially three days into 2012, the ‘net is already abuzz with talk of impending doom on December 21 of this year. Luckily there are plenty of science sources that are more than happy to offer fact-based consolation that there is no actual evidence that anything cosmically bad is expected to occur on…
Lights in the Dark 