14 April 2010, 08:29 AM ET
On Thursday April 15, the evening starts with a triple conjunction of the moon, Mercury, and Venus, then continues with Mars visiting the Beehive.
02 April 2010, 03:15 PM ET
An Italian astronomer caught the rare sight of Venus and Mercury together over Rome in the night sky in a new photo.
26 March 2010, 07:25 AM ET
For the next couple of weeks, brilliant Venus and the elusive planet, Mercury, perform a sort of celestial dance for two in the western twilight sky.
26 February 2010, 08:22 AM ET
Since last summer, the dominant evening planet was Jupiter, but now Venus has emerged.
21 December 2009, 10:50 AM ET
The first African-American to fly in space, along with three other accomplished astronauts, are set to join the U.S. Astronaut Hall of Fame in June.
09 November 2009, 03:45 PM ET
Legendary space industry engineer Thomas J. O'Malley, 94, died Friday evening, shortly after a phone call from Mercury astronaut and former U.S. Sen. John Glenn, whom O'Malley launched into space in 1962 by pushing a button.
03 November 2009, 02:58 PM ET
Mercury probe sees seasonal changes, iron on surface during third flyby.
01 October 2009, 12:23 PM ET
New images of Mercury from final MESSENGER probe flyby show close-up of bright spot.
30 September 2009, 09:50 AM ET
A NASA spacecraft that completed its third and final flyby of the planet Mercury yesterday, snapping new pictures of the innermost planet, had a small data hiccup that has delayed release of the images.
29 September 2009, 01:24 PM ET
Night Sky column for September 25.
28 September 2009, 03:03 PM ET
NASA's MESSENGER spacecraft is set to make a close approach to the planet Mercury, revealing new views along the way.
10 June 2009, 01:22 PM ET
Computer simulations suggest a 1 percent chance of future planetary collisions.
08 June 2009, 09:03 AM ET
Spacecraft discovers new clues to how Mercury hangs on to its atmosphere.
11 May 2009, 06:39 AM ET
Mercury has been beaten up! But exactly how much and by whom is only now coming into focus as the Messenger spacecraft slowly settles into orbit. "Bad Astronomy's" Phil Plait reveals bits of the strange, scarred, shrunken surface of this small world.
30 April 2009, 04:02 PM ET
New observations from NASA's MESSENGER spacecraft reveal about 30 percent of the planet Mercury that has never been seen up close before.
09 April 2009, 06:51 PM ET
Famed Mercury astronaut John Glenn has an open seat at his lunch table, provided you’re willing to foot the bill.
09 April 2009, 05:49 PM ET
They were seven military pilots in peak shape. Men of faith, family and America's first astronaut volunteers.
03 April 2009, 07:39 AM ET
Mercury is often cited as the most difficult of the five brightest naked-eye planets to see.
13 February 2009, 11:14 AM ET
This month you'll have an opportunity to see all five naked-eye planets.
23 December 2008, 09:25 AM ET
This year was packed with discoveries, from fast-spinning black holes to loads of extrasolar planets.
29 October 2008, 04:41 PM ET
NASA's MESSENGER spacecraft has turned up new oddities on planet Mercury.
17 October 2008, 06:58 AM ET
The next three weeks will present an excellent opportunity to view Mercury.
07 October 2008, 02:00 AM ET
A Mercury probe has begun beaming back images from its second flyby.
06 October 2008, 02:00 AM ET
A NASA spacecraft zoomed past Mercury for the second time early Monday.
03 October 2008, 06:54 AM ET
This week will be a fine time to seek out planet Uranus.
01 October 2008, 03:58 PM ET
A space probe prepares for its second Mercury flyby next Monday.
08 September 2008, 12:46 PM ET
The closest planet to the Sun may have ice. How is that possible?
02 September 2008, 06:32 AM ET
A planetary map-mapmaker targets Mercury and the moons of Saturn.
22 August 2008, 06:43 AM ET
Recently, three planets have been clustered rather closely together.
10 July 2008, 06:34 AM ET
Could aliens be tuning into the most powerful radio transmitter on Earth?
04 July 2008, 10:02 AM ET
Three planets are now putting on a show as prominent evening luminaries.
03 July 2008, 02:03 PM ET
First MESSENGER flyby confirms volcanism, gives data on Mercury's magnetic field.
19 June 2008, 06:44 AM ET
Almost weekly, there's an announcement of another extrasolar planet.
06 June 2008, 11:45 AM ET
The Discovery Channel showcases NASA missions in High Definition.
05 June 2008, 06:59 AM ET
Does water ice exist in the shadowed craters near the moon's poles?
18 April 2008, 06:42 AM ET
Mercury is the most difficult of the five 'naked-eye' planets to see.