01 June 2012, 11:28 AM ET
NASA's Solar and Heliospheric Observatory (SOHO) snapped imagery of Venus, almost past Mercury, in anticipation of the Venus Transit of the Sun on June 5-6, 2012 (depending where you are in the world).
22 May 2012, 02:01 PM ET
NASA's Solar and Heliospheric Observatory (SOHO) caught Jupiter, Mercury and the Pleiades Star Cluster converging within its camera's field of view.
09 April 2012, 07:41 AM ET
On April 7th 2012, a coronal mass ejection was lofted towards Mercury and set to slam into its ultra-thin atmosphere on April 9th. The Solar Dynamics Observatory captured the blast in extreme ultraviolet.
04 April 2012, 12:56 PM ET
Mercury is nearly as bright as other naked-eye planets, but there's a trick to spotting the elusive planet.
31 March 2012, 01:59 PM ET
From water on Mars to fake feline astronauts, it's been a busy week in space. Vote for the week's best space story.
26 March 2012, 02:57 PM ET
Mercury's poles may have ice deposits, according to new findings from NASA's Messenger probe.
26 March 2012, 02:10 PM ET
NASA's MESSENGER spacecraft is the first to ever to orbit the planet closest to the Sun. It has delivered 89 wide angle camera images that have been compiled into a complete picture of the planet's south pole in this time-lapse video.
25 March 2012, 04:58 AM ET
From runaway planets to a submarine on Jupiter, it's been a busy week in space. Vote for the week's best space story.
22 March 2012, 04:45 PM ET
The Messenger spacecraft began a one-year bonus mission at Mercury, and the twin Grail probes will get 90 more days at the moon.
21 March 2012, 09:30 AM ET
The solar system's innermost planet continues to confound and intrigue scientists.
14 March 2012, 09:14 AM ET
The velocity and inertia of high-speed charged particles ejected from the Sun during a coronal mass ejection (CME) can be measured as they slam into spacecraft; the resulting data can be presented as sound. Produced by the University of Michigan.
08 March 2012, 03:52 PM ET
Skywatchers can spot the full moon, Venus, Jupiter, Mercury and perhaps even Uranus tonight.
01 March 2012, 11:43 AM ET
The planet Mercury looks a little bit like Earth's moon.
01 March 2012, 11:24 AM ET
Mercury is the closest planet to the sun.
27 February 2012, 12:32 PM ET
Jupiter and Venus lined up with the moon, and will get even closer together in March.
27 February 2012, 12:31 PM ET
See amazing photos of Venus, Jupiter and the moon in a celestial triple conjunction.
25 February 2012, 12:02 PM ET
Venus, Jupiter and Mercury can be seen near the moon at sunset. Mars makes an appearance.
24 February 2012, 11:58 AM ET
Jupiter, Venus and the crescent moon will shine extra bright just after sunset in the western sky this weekend.
17 February 2012, 05:46 PM ET
The best time to see planet Mercury in the evening sky in 2012 is next week.
11 January 2012, 06:00 AM ET
Retired NASA spaceflyer Steven Hawley also discussed his own experiences.
22 December 2011, 02:00 PM ET
The mystery of Mercury's weak magnetic field may be solved.
21 December 2011, 02:00 PM ET
Don't miss the seven major planets of the solar system in the night sky this week.
18 December 2011, 06:25 AM ET
From new ways to get to space to fiery death plunges into the sun, it was a busy week in space.
12 December 2011, 02:08 PM ET
NASA's Dawn mission currently orbiting Vesta has revealed signs of differentiation - a process where dense materials sink to the center and less dense rise to the surface. This is a characteristic of a terrestrial planets such as our own.
11 December 2011, 01:00 PM ET
New research suggests a giant asteroid may have knocked into Mercury and changed its spin.
10 December 2011, 08:00 AM ET
From a comet diving into the sun to planets made of diamonds and more, it was a busy week in space.
17 November 2011, 08:15 AM ET
The extension will keep Messenger in orbit around Mercury until March 2013.
11 November 2011, 03:03 PM ET
The space rock apparently formed out of the same stuff that became Earth, Venus and Mercury.
29 September 2011, 02:00 PM ET
NASA's Messenger probe has discovered some seriously weird stuff about planet Mercury.
29 September 2011, 12:46 PM ET
The planet closest to the Sun has a magnetosphere like the Earth, but at its poles, the Sun's powerful force takes it toll by super charging sodium and oxygen particles and blasting them into space. NASA's MESSENGER probe weathers the storm.
29 September 2011, 09:08 AM ET
NASA will announce the new Mercury discoveries at 2 p.m. EDT today.
20 July 2011, 03:33 PM ET
Mercury is reaching its eastern most point in the night sky tonight.
28 June 2011, 11:09 PM ET
Look for Mercury in the northwestern sky just after sunset between June 30 and July 10.
16 June 2011, 05:30 PM ET
NASA's Messenger probe is already revealing intriguing new details about Mercury.
13 June 2011, 10:24 AM ET
Each week we investigate lingering questions about cosmic objects. Now batting: Mercury.
27 May 2011, 12:49 PM ET
Look to the skies this Memorial Day weekend to see four planets near the moon.