Near-Earth Objects - page 16

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New space launch system bringing human mission to an asteroid

With NASA’s announcement of its new, mammoth Space Launch System (SLS), preparations can begin in earnest for the first human mission to an asteroid. The SLS will take the Orion Multipurpose Crew Vehicle (MPCV) on the first human forays into deep space, out of the

October 02, 2011

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Orbital debris and satellite re-entry

Orbital debris is any man-made object in orbit about the Earth which no longer serves a useful purpose. Approximately 19,000 objects larger than 10 cm are known to exist. The estimated population of particles between 1 and 10 cm in diameter is approximately 500,000....

September 28, 2011

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Real facts about comet Elenin statement by Leonid Elenin

SpaceObs, website run by Leonid Elenin, the most mysterious amateur astronomer that discovered Comet C/2010 X1 or Comet Elenin.Elenin was visible on STEREO A HI1 from September 6th to the 22nd where it then moves out of the field of view.  To see it you need to

September 27, 2011

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NASA to make announcement on Near-Earth Asteroids

 NASA says it will hold a news conference at 1 p.m. EDT (6 p.m. GMT) on Thursday to reveal near-Earth asteroid findings and implications for future research.The briefing will take place at NASA Headquarters in Washington.NASA’s Wide-field Infrared Survey

September 27, 2011

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Final Update Overview: NASA's UARS Re-enters Earth's Atmosphere

NASA has released a new statement pinpointing the re-entry of the UARS satellite on Sept. 24th:"The Joint Space Operations Center at Vandenberg Air Force Base in California has determined the satellite entered the atmosphere over the Pacific Ocean at 14.1

September 26, 2011

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Second big satellite set to resist re-entry burn-up, ROSAT to fall in October

There is more space junk headed our way next month. A defunct German space telescope called ROSAT is set to hit the planet at the end of October – and it even is more likely than UARS to cause injury or damage in populated areas.NASA calculates a 1-in-3200 chance

September 24, 2011

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Where is UARS?

NASA says it continues to wait for final confirmation of re-entry. "If debris fell on land (and that's still a BIG if), Canada is most likely area," the space agency just said on their twiter.  It is still unconfirmed but it looks like the place of

September 24, 2011

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UARS reentry update! Where will it fall?

NASA's UARS satellite is making its last orbits around Earth. Orbital elements just published by US Strategic Command suggest that re-entry could occur a little later than previously expected."For now, it looks like 00:00 - 04:00 UTC on Sept. 24," says satellite

September 23, 2011

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UARS re-entry update

NASA has issued an update on the condition of the decaying UARS satellite: "As of 1:30 p.m. EDT Sept. 21, 2011, the orbit of UARS was 120 mi by 130 mi (190 km by 205 km). Re-entry is expected sometime during the afternoon of Sept. 23, Eastern Daylight Time. The

September 22, 2011

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UARS Re-entry Alert!

NASA reports that UARS, an atmospheric research satellite the size of a small bus, will re-enter Earth's atmosphere on Sept. 23, plus or minus one day. Not all of the spectacularly-disintegrating spacecraft will burn up in the atmosphere; debris could be scattered

September 19, 2011

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Huge defunct satellite falling to Earth faster than expected

NASA space junk experts have refined the forecast for the anticipated death plunge of a giant satellite, with the U.S. space agency now predicting the 6 1/2-ton climate probe will plummet to Earth around Sept. 23, a day earlier than previously reported.The defunct

September 17, 2011

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Kreutz sungrazing comet seen diving into Sun

On September 14, the Solar and Heliospheric Observatory (SOHO) watched what happened when one comet got too close. Click on the arrow to play a 6-hour time lapse movie: One icy comet went in, none came out. Discovered on Sept. 13th by Michal Kusiak of Poland and...

September 15, 2011

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A comet diving into the Sun

A comet is diving into the sun today. Just discovered by comet hunters Michal Kusiak of Poland and Sergei Schmalz of Germany, the icy visitor from the outer solar system is expected to brighten to first magnitude before it disintegrates on Sept. 14th.

September 13, 2011

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Huge defunct satellite to plunge to Earth

Heads up! That's the word from NASA on Sept. 7  given the impending re-entry of a 6.5-ton satellite through Earth's atmosphere. The huge Upper Atmosphere Research Satellite (UARS) is expected to re-enter Earth's atmosphere in an uncontrolled fall in late September or

September 09, 2011

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Some facts and figures about Comet Elenin

2010 X1 (Elenin) is apparently disintegrating. It faded dramatically after a solar flare on August 20. Images at the end of August revealed a spreading, more diffuse coma. It will likely continue to fade and become more diffuse in the opening days of the month. It

September 06, 2011

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What is happening with International Space Station

While some may dismiss such claims as hype, there is a real fear among NASA officials that, should the orbiting space station need to be abandoned, the risk for a catastrophic failure greatly increases. The situation arose when Russia’s Soyuz rocket, carrying

September 01, 2011

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Comet Garradd approaching the sun and brightening

As September begins, green Comet Garradd is gliding across the star fields of the Milky Way in the early evening sky. The icy visitor from the outer solar system is not yet visible to the naked eye, but it looks great through amateur telescopes.Astrophotographer

September 01, 2011