This frame from a movie shows the progression of NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) investigation for the mission's first two years following its restart in December 2013. Green circles represent near-Earth objects.
The asteroid Euphrosyne glides across a field of background stars in this time-lapse view from NASA's WISE spacecraft. Euphrosyne is quite dark in visible light, but glows brightly at infrared wavelengths.
Asteroid Named for Nobel Prize Winner Joins Historic Lineup
An asteroid discovered by NASA's NEOWISE spacecraft has been given the formal designation 316201 Malala, in honor of Malala Yousafzai of Pakistan, who received the Nobel Peace Prize in 2014. The asteroid's previous appellation was 2010 ML48.
Comet C/2014 Q2 (Lovejoy) is one of more than 32 comets imaged by NASA's NEOWISE mission from December 2013 to December 2014. This image of comet Lovejoy combines a series of observations made in November 2013.
Comet C/2013 UQ4 (Catalina) first looked like an asteroid when NASA's NEOWISE team first observed it on December 31, 2013. These exposures were taken that day, when the comet was at a distance of about 2.9 AU from the sun.
Comet NEOWISE was first observed by NASA's NEOWISE spacecraft on Valentine's Day, 2014. This heat-sensitive infrared image was made by combining six exposures taken by the NEOWISE mission of the newly discovered comet.
NASA's NEOWISE spacecraft opened its 'eyes' after more than two years of slumber to see the starry sky with the same clarity achieved during its prime mission. This image shows a patch of sky in the constellation Pisces.
NEOWISE, the asteroid-hunting portion of NASA's WISE mission, illustrates the differences between orbits of a typical near-Earth asteroid (blue) and a potentially hazardous asteroid, or PHA (orange). PHAs are a subset of the near-Earth asteroids (NEAs).