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Latest Planetary defense Stories

ESA Asteroid Deflection Missions Underway
2013-01-15 18:17:23

The European Space Agency is looking for research ideas to help guide the development of an asteroid deflection mission study.

Apophis Won’t Hit Earth In 2036
2013-01-13 08:33:31

There is a less than one-in-a-million chance that a massive asteroid, approximately as wide as three American football fields, will collide with Earth in 2036.

Herschel Observed Asteroid Apophis Over The Weekend
2013-01-09 14:28:25

ESA’s Herschel space observatory made new observations of asteroid Apophis as it approached Earth this weekend. The data shows the asteroid to be bigger than first estimated, and less reflective.

Asteroid Apophis To Swing By Earth This Week
2013-01-09 05:27:01

Asteroid 99942, named Apophis after an ancient Egyptian mythological demon, will be whizzing by Earth this week. Apophis is a near-Earth asteroid with an estimated diameter of approximately three football fields – over 880 feet.

Massive Asteroid Will Not Strike Earth In 2040
2012-12-23 05:40:35

A 140 meter diameter asteroid experts once believed had a one in 500 chance of striking the Earth no longer presents a significant impact risk, NASA officials have confirmed.

Radar Images Of Asteroid 2007 PA8
2012-11-27 20:02:52

A collage shows nine radar images of near-Earth asteroid 2007 PA8 that were obtained between Oct. 31 and Nov. 13, 2012, with data collected by NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, Calif.

Asteroid To Fly Past Earth In Early 2013
2012-10-28 06:21:06

An asteroid approximately the size of a city block will be completing its closest ever fly-by in our planet's history early next year, and one prominent American university is planning a "viewing party" to commemorate the occasion.

Lost Asteroid Rediscovered By Amateur Astronomer
2012-10-13 05:05:52

The European Space Agency reports that it has rediscovered an asteroid that was once lost through the agency's space hazards program.

2012-09-20 09:35:54

Momentum Grows for First Private Deep Space Mission to Map the Inner Solar System and Track Asteroids Posing Threats to Earth


Latest Planetary defense Reference Libraries

3_973757bf6370bb40a6fd131d38ec6bb12
2004-10-19 04:45:40

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 ΔV (change in velocity) than the Moon. In the United States, NASA...

3_8254e27b9fccec1aaab3b9785e39d79f2
2004-10-19 04:45:40

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 ΔV 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...

3_24d9d2ae65287658880cc277c0b4ea022
2004-10-19 04:45:40

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...

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Word of the Day
obdormition
  • Sleep; the state or condition of being asleep.
  • The state or condition of numbness of a part due to pressure on a nerve: as, the obdormition of a limb.
The word 'obdormition' comes from a Latin word meaning "to fall asleep".
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