Image Credit: NASA/JPL-Caltech
The true identity of centaurs, the small celestial bodies orbiting the Sun between Jupiter and Neptune, is one of the enduring mysteries of astrophysics. Are they asteroids or comets? A new study of observations from NASA’s Wide-field Infrared Survey Explorer (WISE) finds most centaurs are comets.
Image Credit: NASA
WASHINGTON — NASA announced Tuesday a Grand Challenge focused on finding all asteroid threats to human populations and knowing what to do about them.
An asteroid “family” is comprised of fragments of a parent body that was broken up during a collision. Image Credit: NASA / JPL / Caltech
NASA’s Wide-field Infrared Survey Explorer (WISE) has found new members of asteroid families. This was accomplished by reviewing millions of images collected during the asteroid-hunting part of the WISE [...]
Asteroid exploration has taken on renewed importance in recent years, with the close passage of 2012 DA14 in February 2013 drawing worldwide public attention. In addition to the proposed NEOCam telescope mission, NASA has announced plans for this Asteroid Retrieval Spacecraft, which may culminate in a mission as early as 2021 to bring a 30-foot-wide asteroid from [...]
An asteroid will make a very close approach to Earth on Feb. 15, and NASA is preparing for the encounter. Image Credit: Jeff Darling
An asteroid is barreling toward Earth! But no worries … there’s no need to get Bruce Willis into a space shuttle and have him save us with a nuclear weapon [...]
Artist’s impression of an asteroid approaching the Earth. Image Credit: Jeff Darling
Be afraid – but not too afraid. It’s true that at some point, if we don’t take steps to prevent it, a big dumb object is going to smash into the Earth so hard that civilization as we know it will be [...]