After months of anticipation, Comet ISON grazed by the sun on Thanksgiving Day (Nov. 28). Something emerged on the far side, but NASA astronomers can now confirm: ISON is no longer a comet.
A team of researchers has presented the coldest ever recorded temperature on Earth.
Mars' Gale Crater had a long, thin lake that could have supported microbial life in a setting 'really similar to an Earth environment,' according to data collected by NASA's Curiosity rover.
Six-year-old dares NASA to keep dreaming: When Coloradan Connor Johnson heard that Congress was threatening to cut NASA's funding, he started a petition to reverse the decision.
The first measurement of radiation at Mars' surface has implications for a human mission to the Red Planet, as well as for where Mars' missions might find traces of Martian life – if it was ever there.
The Kepler team’s proposed mission for the hobbled telescope must now compete with other astrophysics missions for a share of NASA's funds.
Five planets beyond our solar system show signs of water in their atmospheres, according to data from NASA's Hubble Space Telescope.
NASA astronauts on the International Space Station describe their not-so-traditional Thanksgiving dinner, eaten 260 miles above the surface of the Earth.
The Kepler space telescope hit the skids in May after its precision-pointing system failed. But engineers have given it a new way to steady its aim, along with hope for a new NASA mission.
Comet ISON is on track to pass through the sun's atmosphere, or corona, Thursday, potentially giving scientists a spectacular glimpse into several solar mysteries.