Mercury, First Planet From the Sun: Latest Discoveries

Mercury is our solar system's smallest planet.
Read More
Moon and Mercury Shine Together in Amateur Photo
Four Percent Illuminated Moon Conjunction with Mercury
April 23rd, 2014
Skywatcher Victor Rogus of Jadwin, Missouri captured this wonderful image of 4 percent illuminated moon in conjunction with planet Mercury on Feb. 27, 2014. See how he did it.
Read More »
Counting Moon Craters: Amateurs, Scientists Do Equally Well
March 24th, 2014
Volunteers with no astronomy experience can pick out craters on the moon as accurately as a researcher with five to 50 years' experience, a new study reports. The finding could give a further boost to the use of citizen scientists in research projects.
Read More »
Explosive Surprise: Huge Volcanoes Shook Mercury for Billions of Years
Terror Rupes on Mercury
April 16th, 2014
Explosive volcanic eruptions apparently shook and shaped Mercury's surface for billions of years, a new study finds, surprising scientists who had thought the phenomenon was impossible on the sun-scorched planet.
Read More »
Tiny Planet Mercury Is Shrinking Fast
MESSENGER Spacecraft Survey of Surface of Mercury
March 17th, 2014
New information from NASA's MESSENGER solves the contradiction between the evidence of shrinking on the planet's crust and the models for heat loss in its core.
Read More »
NASA Spacecraft Snaps More than 200,000 Photos of Mercury (Image)
MESSENGER Crater Hollows Mosaic
February 7th, 2014
A probe orbiting Mercury has beamed more than 200,000 images to ground controllers on Earth, and it's still going strong.
Read More »
Brightest Planets in April's Night Sky: See Mars, Jupiter and More
This NASA graphic shows the location of Mars in early April at 8 p.m. local time. Mars will reach opposition on April 8, 2014.
April 7th, 2014
Planets abound in the night sky this month, which affords good views of Venus, Jupiter and Neptune. And on Tuesday (April 8), Mars will make its closest approach to Earth in more than six years.
Read More »
Elusive Mercury Visible in March's Dawn Sky: How to See It
Mercury in March 2014 Sky Map
March 5th, 2014
Mercury, the elusive planet that orbits closest to the sun, makes an appearance this month in the dawn sky.
Read More »