Spacecraft Assembly Begins for NASA's OSIRIS-REx Asteroid Sample Return Mission

Artist concept of OSIRIS-REx, the first U.S. mission to return samples from an asteroid to Earth. Image Credit: NASA/Goddard

The first United States mission in history to launch a robotic spacecraft to an asteroid, retrieve samples, and return those samples back to Earth for study just passed a big milestone in its development […]

Scientists Debate How to Search for Life on Europa in New Mission

Jupiter’s ice-covered moon Europa hides a water ocean beneath its surface. A return mission is now planned to help search for evidence of life there. Photo Credit: NASA/JPL

Jupiter’s moon Europa, with its subsurface ocean, is considered by many to be the best place in the Solar System to search for extraterrestrial life. […]

T-100 Days to 'Sleeping Beauty' Rosetta's Wake-Up Call

Rosetta and its Philae landing craft will arrive at Comet 67P/Churyumov-Gerasimenko in 2014. Less than 100 days now remain before the craft are due to be revived from their 2.5-year deep-space hibernation. Image Credit: ESA

According to the Brothers Grimm, Sleeping Beauty was condemned to sleep for 100 years, but for the European […]

NASA's Comet-Chasing Deep Impact Mission Is No More

An artist’s concept of the Deep Impact spacecraft flying past a comet. Image Credit: NASA/JPL/UMD/Pat Rawlings

Nine years ago NASA launched a spacecraft to do something that had never been done at any point in recorded history: to visit a comet and punch a hole in its face to investigate the surface and […]

JPL Attempting to Reestablish Communication With Comet Hunter Deep Impact

The Deep Impact spacecraft, depicted here in flight, is feared lost after a period of no communication since Aug. 8. Image Credit: NASA/JPL-Caltech.

NASA announced Tuesday, Sept. 10 that ground controllers have lost contact with its flagship comet-hunting probe Deep Impact, which is part of the Discovery Program managed at Marshall Space Flight […]

Spitzer Space Telescope Celebrates 10 Years of Astronomical Discovery

The infrared vision of NASA’s Spitzer Space Telescope has revealed that the Sombrero galaxy—named after its appearance in visible light to a wide-brimmed hat—is in fact two galaxies in one. Image Credit: NASA/JPL-Caltech

Ten years ago tonight, NASA’s fourth “Great Observatory”—the Space Infrared Telescope Facility (SIRTF)—was boosted into orbit from Cape Canaveral Air […]

Skylab's Long-Haired Messenger: The Visitation of Comet Kohoutek

Skylab and its Apollo Telescope Mount (ATM)—seen here with its “windmill” of solar arrays—was a critical asset in observing Comet Kohoutek in the winter of 1973-74. Photo Credit: NASA

Forty years ago, nine men occupied America’s first space station, high above the Earth. Much of the history of Skylab is clouded by its […]

Comet ISON Fizzes Like a Soda Pop

Photo Credit: NASA / SST

Coming soon to a region of space near you: comet ISON, which is expected to put on a spectacular show toward the end of the year. Currently, ISON is about 258 million miles from the Sun, between the orbits of Jupiter and Mars. Its tail already stretches out […]

How to Target an Asteroid

This spectacular image of comet Tempel 1 was taken 67 seconds after it obliterated Deep Impact’s impactor spacecraft. Image Credit: NASA/JPL-Caltech/UMD

Like many of his colleagues at NASA’s Jet Propulsion Laboratory, Pasadena, Calif., Shyam Bhaskaran is working a lot with asteroids these days. And also like many of his colleagues, the deep space […]

NASA's Deep Impact Spies Comet ISON

NASA’s Deep Impact spacecraft is seen here in this NASA illustration observing one of the comets it has studied since it was launched in 2005. Currently, Deep Impact is investigating the ISON comet, which was discovered last year. Image Credit: NASA / JPL

Deep Impact, the spacecraft that sent an impactor into the […]