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NASA Probes Near Sun Safe from Triple Solar Eruption

Two NASA spacecraft are safe and sound, after the sun unleashed three intense back-to-back solar eruptions in their direction, scientists say. Full story

Greenish rock may be meteorite from Mercury

Researchers suspect that a green-colored meteorite may have come from the planet Mercury, based on its peculiar chemical composition. Full story

It's Official! Water Ice Discovered on Mercury

It's time to add Mercury to the list of worlds where you can go ice-skating. Confirming decades of suspicion, a NASA spacecraft has spotted vast deposits of water ice on the planet closest to the sun. Full story

Cookie Monster spotted on Mercury? NASA thinks so

An impact basin spotted on Mercury with two smaller craters above it looks remarkably like the sweet treat-loving Cookie Monster muppet of "Sesame Street" fame — at least to the eyes of scientists working on NASA's Messenger mission to the small planet. Full story

Solar Storm Expected to Hit Earth Tuesday

A medium-size solar flare erupted from the sun this weekend, hurling a cloud of plasma and charged particles toward Earth on a cosmic path that is expected to deliver a glancing blow to our planet tomorrow (July 31), according to space weather forecasters. Full story

Solar storm expected to hit Earth Tuesday

A medium-size solar flare erupted from the sun this weekend, hurling a cloud of plasma and charged particles toward Earth on a cosmic path that is expected to deliver a glancing blow to our planet on Tuesday, according to space weather forecasters. Full story

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Related Photos

Mercury is pictured in this NASA handout photo
Mercury is pictured in this NASA handout photo

Mercury is pictured in this undated NASA handout photo obtained by Reuters February 22, 2013. This false-colour image of Mercury was produced by using images from the color base map imaging campaign during NASA's MESSENGER's mission. The colors enhance the chemical, mineralogical, and physical diffe

Radar image of Mercury's north polar region is shown superposed on a mosaic of Mercury MESSENGER images
Radar image of Mercury's north polar region is shown superposed on a mosaic of Mercury MESSENGER images

A radar image of Mercury's north polar region acquired by the Arecibo Observatory in Puerto Rico is shown superposed on a mosaic of Mercury MESSENGER images of the same area in this NASA handout photo released November 29, 2012. REUTERS/NASA/Handout

Handout photo of a mosaic of MESSENGER images of Mercury's North Polar Region
Handout photo of a mosaic of MESSENGER images of Mercury's North Polar Region

A mosaic of MESSENGER images of Mercury's north polar region is pictured in this handout image from NASA. Instruments aboard NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft studying the planet Mercury have provided compelling support for the long-held hypothesis the

This colorful image of the impact basin Raphael shows a diversity of compositions within the volcanic plains that flooded the basin's floor. Hollows appear to be forming in the low reflectance material within the smaller, roughly 40-kilometer (25-mile) diameter complex crater just south of the cent

Astronaut John H. Glenn
Astronaut John H. Glenn

Astronaut John H. Glenn Jr. in his silver Mercury spacesuit during pre- flight training activities at Cape Canaveral. On February 20, 1962 Glenn lifted off into space aboard his Mercury Atlas (MA-6) rocket and became the first American to orbit the Earth. After orbiting the Earth 3 times, Friendship