Mercury, First Planet From the Sun: Latest Discoveries

Mercury is our solar system's smallest planet.
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Now Is the Best Time to See Mercury in the Night Sky This Year
On the evening of Thursday, May 7, Mercury was at its farthest from the sun for 2015. The next week is the best time of the year to see Mercury from the Northern Hemisphere.
May 8th, 2015
Now is the best time to see the planet Mercury in the evening sky just after sunset. Here's how to see Mercury in the night sky. Mercury was at it's farthest from the sun for the year on Thursday (May 7).
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Farewell, MESSENGER! NASA Probe Crashes Into Mercury
The Impact Zone of NASA's MESSENGER Mercury Probe
April 30th, 2015
NASA's MESSENGER probe crashed at 3:26 p.m. EDT Thursday (April 30), gouging a new crater into Mercury's surface. This violent end was inevitable for MESSENGER, which had been orbiting Mercury since March 2011 and had run out of fuel.
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Best Space Stories of the Week – May 3, 2015
Progress 59 Cargo Spaceship Launches, April 28, 2015
May 3rd, 2015
A Russian cargo vessel suffered a serious malfunction on its way to the space station, NASA's MESSENGER probe slammed into Mercury and the New Horizons spacecraft snapped the best-ever photos of Pluto. Here's a look at's top stories of the week.
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NASA Spacecraft Crashes Into Mercury Today: See the Live Slooh Webcast
NASA's MESSENGER spacecraft, shown here in an illustration, will crash into Mercury on April 30, ending its 11-year mission to the planet.
April 30th, 2015
NASA's MESSENGER spacecraft will smash into Mercury today, April 30, to end its mission and you can celebrate the probe's epic voyage in a live Slooh webcast. Here's how to watch at 3 p.m. EDT.
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Mercury Probe's Dramatic Death Plunge Set for April 30
MESSENGER at Mercury
April 16th, 2015
NASA's MESSENGER probe, which has been circling Mercury since March 2011, is nearly out of fuel and will say goodbye with a dramatic death plunge on April 30, provided one final orbit-raising maneuver scheduled for April 24 goes as planned.
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NASA Mercury Probe Trying to Survive for Another Month
Artist's impression of NASA's Messenger spacecraft in orbit at Mercury. Messenger arrived at the solar system's innermost planet in March 2011.
March 29th, 2015
Last week, NASA's Messenger spacecraft executed the first of a series of engine burns designed to lift the probe's orbit slightly and delay its inevitable impact into Mercury's surface by up to a month.
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Five Mercury Craters Named to Celebrate End of NASA's MESSENGER Mission
Five Newly Named Craters on Mercury
May 1st, 2015
Just hours before NASA's MESSENGER spacecraft crashed into the surface of Mercury, the winners of a contest to name five new craters on the rocky planet were announced.
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See Amazing Photos of Mercury By a Doomed NASA Spacecraft (Video)
NASA'S Messenger Probe at Mercury
April 29th, 2015
NASA's Messenger probe, which has been orbiting Mercury since March 2011, is nearly out of fuel and will smash into the planet on Thursday (April 30). NASA released a new Messenger video on Monday (April 27) as a tribute to the successful mission.
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How to See the Brightest Planets in the April Night Sky
Venus in April 2015
April 2nd, 2015
Skywatchers around the world can look forward to spotting bright planets throughout April; observers just need to know where to look.
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