Latest Planetary defense Stories
NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) has made its first discovery since coming out of hibernation last year: a never-before-seen asteroid dubbed 2013 YP139.
According to NASA, the first asteroid of the 2014 season was discovered by Catalina Sky Survey, a NASA-sponsored observatory near Tucson, Arizona. It has been designated as 2014 AA and was viewed moving across the sky early Wednesday morning, January 1, 2014.
NEOWISE has returned to service, and has sent its first set of test images back to Earth in preparation for a renewed mission.
NASA announced that it had started the countdown for OSIRIS-REx, the space agency’s mission to collect a physical sample from a distant asteroid.
A new agreement between NASA and a Washington-based asteroid mining firm will give computer programmers a chance to use the US space agency’s data to help locate near-Earth objects.
Mars may be helping to shape the surface of some near-Earth asteroids, according to a new study published in the journal Icarus.
A series of recently released papers dealing with the meteor that exploded over Chelyabinsk, Russia, in Februar,y brought forth two startling conclusions: the damage could have been much worse, and these types of events could be much more common than previously thought.
Near-Earth Object -- Near-Earth Objects (NEO) are asteroids, comets and large meteoroids whose orbit intersects Earth's orbit and which may therefore pose a collision danger. Due to their size and proximity, NEO's are also more easily accessible for spacecraft from Earth and are important for future scientific investigation and commercial development. In fact, some near-Earth asteroids can be reached with much less Î”V (change in velocity) than the Moon. In the United States, NASA...
Near-Earth Asteroid -- Near-Earth asteroids (NEAs) are asteroids whose orbit intersects Earth's orbit and which may therefore pose a collision danger, as well as being most easily accessible for spacecraft from Earth. In fact, some near-Earth asteroids can be reached with much less Î”V than the Moon. The most famous near-Earth asteroid is 433 Eros that was visited by NASA's Near Earth Asteroid Rendezvous probe. A few hundred such near-Earth asteroids are known, ranging in size up...
433 Eros -- The asteroid 433 Eros was named after the Greek god of love Eros. It is an S-type asteroid approximately 13 x 13 x 33 km in size, the second-largest near-Earth asteroid. It was visited by the NEAR Shoemaker probe, which first orbited it taking extensive photographs of its surface and then in 2001 at the end of its mission was landed on the asteroid's surface using only its maneuvering jets. Depending on where they stood on Eros, a person who weighed 200 pounds (90...
- A coin originally worth six pennies Scots, and later three; held equivalent to an English halfpenny.
- (in plural) Money; cash.