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Oort cloud Could Be Smaller than Previously Thought.


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February 1, 2001

NEAR Prepares to "Land" on Eros

Oort cloud Could Be Smaller than Previously Thought

Hubble Finds an Ant in Space

Surveyor Completes its Primary Mapping Mission

NEAR PREPARES TO "LAND" ON EROS

NASA has released more information about how it intends to land the NEAR-Shoemaker probe onto asteroid Eros on February 12th. Currently orbiting the asteroid at an altitude of 35 kilometres, it will maneuver itself slowly towards the surface. If all goes well, it will land gently on the asteroid, and then fall over to rest on its side, with its antenna still pointed towards the Earth. If the probe doesn't slow itself properly, it will smash against the surface - even hitting at 30 kph would destroy it.

Original Source:

http://www.jhuapl.edu/public/pr/010131.htm

Internet Coverage:

http://news.bbc.co.uk/hi/english/sci/tech/newsid_1148000/1148071.stm

http://www.cosmiverse.com/space02010101.html

http://www.space.com/scienceastronomy/astronomy/near_landing_presser_010131.html

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Asteroids

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asteroids.html

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Asteroids

OORT CLOUD COULD BE SMALLER THAN PREVIOUSLY THOUGHT

A new study published in the latest edition of nature indicates that the Oort cloud - a giant ring of icy objects beyond the orbit of Pluto - might be half as large as previously thought. By studying various comets, scientists have predicted that collisions between the icy objects would erode them significantly. The early solar system was a demolition derby, with objects colliding all the time. Previous estimates hadn't taken into account the erosion of the objects in the Oort cloud from all these collisions.

Original Source:

http://www.jpl.nasa.gov/releases/2001/oort.html

Internet Coverage:

http://news.bbc.co.uk/hi/english/sci/tech/newsid_1148000/1148071.stm

http://www.cosmiverse.com/space02010104.html

http://www.space.com/scienceastronomy/solarsystem/comet_collisions_010131.html

http://www.spacedaily.com/news/kuiper-01b.html

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http://www.universe-galaxies-stars.com/comets.html

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comets.html

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http://www.universe-galaxies-stars.com/comets.html

HUBBLE FINDS AN ANT IN SPACE

New images from the Hubble Space Telescope provide the best view yet of Mz3, also known as the "ant nebula". This planetary nebula's bizarre shape is a puzzle to astronomers; the dying star's emissions are symmetrical, and not the chaotic shape expected from such an explosion. One possibility is that the star has a companion shaping the outflowing gas. Another theory is that the expelled matter is just following the star's magnetic field. No other observed planetary nebula resembles Mz3.

Original Source:

http://oposite.stsci.edu/pubinfo/PR/2001/05/index.html

Internet Coverage:

http://www.cnn.com/2001/TECH/space/02/01/hubble.ant.nebula/index.html

http://www.cosmiverse.com/space02010105.html

http://spaceflightnow.com/news/n0102/01hubble/

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http://www.universe-galaxies-stars.com/hubble.html

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astronomy.html

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http://www.universe-galaxies-stars.com/hubble.html

SURVEYOR COMPLETES ITS PRIMARY MAPPING MISSION

The Mars Global Surveyor completed its primary mission yesterday, including studying Mars climate, surface topography, subsurface resources and mapping the entire planet, taking over 58,000 images. That's finished, what next? NASA now plans to use Surveyor for additional science work and to research potential landing locations for future missions. They will also use the spacecraft to relay communications to two rovers expected to reach the planet in 2004.

Original Source:

http://www.jpl.nasa.gov/releases/2001/era.html

Internet Coverage:

http://www.cnn.com/2001/TECH/space/01/31/us.marsmission.ap/index.html

http://www.cosmiverse.com/space02010103.html

http://dsc.discovery.com/news/briefs/20010129/mars.html

http://spaceflightnow.com/news/n0102/01mgs/

Similar Stories:

http://www.universe-galaxies-stars.com/surveyor.html

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http://www.universe-galaxies-stars.com/mars.html



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