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Latest Planetary defense Stories

Small Asteroid Will Pass By Earth Safely
2013-02-04 08:30:02

NASA's Jet Propulsion Laboratory The small near-Earth asteroid 2012 DA14 will pass very close to Earth on February 15, so close that it will pass inside the ring of geosynchronous weather and communications satellites. NASA's Near-Earth Object Program Office can accurately predict the asteroid's path with the observations obtained, and it is therefore known that there is no chance that the asteroid might be on a collision course with Earth. Nevertheless, the flyby will provide a unique...

Large Asteroid Will Make Earth Flyby Next Month
2013-01-29 12:55:40

[Watch Video: Record-Setting Asteroid Flyby] Lee Rannals for redOrbit.com — Your Universe Online A record-setting asteroid about the size of half a football field will be making a close flyby to Earth just after Valentine's Day. Although there is no danger of a collision, the asteroid, 2012 DA14, will still be making a record-setting close approach, according to NASA. "Since regular sky surveys began in the 1990s, we've never seen an object this big get so close to Earth," Don...

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

Lee Rannals for redOrbit.com — Your Universe Online One mission aims to take a Bruce Willis approach in the movie Armageddon, by deflecting any future asteroids that might be headed towards Earth. The European Space Agency is looking for research ideas to help guide the development of an asteroid deflection mission study. ESA is asking for concepts based on both ground- and space-based investigations that could improve the understanding of the physics of very high-speed...

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

redOrbit Staff & Wire Reports — Your Universe Online 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, NASA officials confirmed on Wednesday. According to MSNBC.com´s Alan Boyle, the “all-clear” was sounded by the US space agency after asteroid Apophis came within nine million miles of our planet. In fact, officials with NASA´s...

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

ESA 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. Catalogued as asteroid (99942) Apophis (previously 2004 MN4), it is often nicknamed ℠the doomsday asteroid´ in popular media, after initial observations made after its discovery in 2004 gave it a 2.7% chance of striking Earth in April 2029. With additional data, however,...

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

April Flowers for redOrbit.com - Your Universe Online 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. The Slooh Space Camera will cover it's near approach on Wednesday, January 9th, 2013. The public can watch several live shows — available on PC, iPhone and Android devices - on Slooh.com starting...

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

redOrbit Staff & Wire Reports - Your Universe Online 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. Previously, orbital uncertainties meant there could have been a 0.2-percent chance that asteroid 2011 AG5 would collide with the planet in February 2040, prompting the scientific community -- including David Tholen, Richard Wainscoat and Marco Micheli of the...

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

NASA Jet Propulsion Laboratory 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. On Nov. 5 at 8:42 a.m. PST (11:42 a.m. EST/16:42 UTC), the object came about 4 million miles (6.5 million kilometers) from Earth, or 17 times the distance between Earth and the moon. The images of 2007 PA8 reveal possible craters,...

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

redOrbit Staff & Wire Reports - Your Universe Online 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. The University of Central Florida (UCF) announced on Saturday that they would be hosting a special event on February 15, 2013, to watch asteroid 2012 DA14 come within 14,000 miles of Earth. Several...


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
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.