Quantcast

Latest Michael A'Hearn Stories

2010-11-16 07:41:36

NASA will hold a news conference at 1 p.m. EST on Thursday, Nov. 18, to discuss new scientific findings from the recent EPOXI mission spacecraft encounter with comet Hartley 2. The news conference will originate from the NASA Headquarters auditorium at 300 E St. SW in Washington. It will be carried live on NASA Television. Media representatives may attend the conference, ask questions by phone or from participating NASA locations. To RSVP or obtain dial-in information, journalists must send...

ef97b3fa568a371e7ce19186922edb73
2010-11-02 10:25:45

Two movies derived from images taken by the two cameras aboard NASA's EPOXI mission spacecraft show comet Hartley 2 is, as expected, quite active, and it provides information on the nucleus's rotation. The spacecraft has been imaging Hartley 2 almost daily since Sept. 5, in preparation for its scheduled Nov. 4 flyby of the comet. "The comet brings us new surprises every day," said Michael A'Hearn, EPOXI principal investigator from the University of Maryland, College Park. "The data we have...

52457da0bd274820aca9eda956f55e141
2010-10-22 11:26:53

Recent observations of comet Hartley 2 have scientists scratching their heads, while they anticipate a flyby of the small, icy world on Nov. 4. A phenomenon was recorded by imagers aboard NASA's Deep Impact spacecraft from Sept. 9 to 17 during pre-planned scientific observations of the comet. These observations, when coupled with expected images during the closest encounter with Hartley 2 on Nov. 4, will become the most detailed look yet at a comet's activity during its pass through the...

77b148cf6943a0c58e5c72f10c443927
2007-07-04 00:00:00

LOS ANGELES -- NASA said Tuesday it is recycling two used spacecraft to lead new robotic missions to study comets and planets around other stars. The encore performances of the Deep Impact and Stardust probes allow the space agency to further its solar system exploration for a fraction of the cost it would take to start a mission from scratch. Both spacecraft successfully completed their primary missions to two different comets and their discoveries have helped scientists understand how the...

2006-10-31 12:35:02

COLLEGE PARK, Md. (AP) - The surviving portion of the Deep Impact space probe that watched as its other half smashed into a comet on July 4 is being sent on a mission to study another comet. NASA announced Tuesday that it has accepted a proposal by the University of Maryland, which developed and manages Deep Impact, to send the vehicle on an extended mission to intercept Comet Boethin. Researchers hope information gathered from Boethin will help further the understanding of how comets formed...

153b877333fd7bb6d17cf3884c50e4f21
2005-09-06 17:10:00

NASA -- Painting by the numbers is a good description of how scientists create pictures of everything from atoms in our bodies to asteroids and comets in our solar system. Researchers involved in NASA's Deep Impact mission have been doing this kind of work since the mission's July 4th collision with comet Tempel 1. "Prior to our Deep Impact experiment, scientists had a lot of questions and untested ideas about the structure and composition of the nucleus, or solid body of a comet, but we had...

de61135a2c37850e272bc9f3325c494d1
2005-06-28 18:45:27

JPL -- NASA's Deep Impact spacecraft observed a massive, short-lived outburst of ice or other particles from comet Tempel 1 that temporarily expanded the size and reflectivity of the cloud of dust and gas (coma) that surrounds the comet nucleus. The outburst was detected as a dramatic brightening of the comet on June 22. It is the second of two such events observed in the past two weeks. A smaller outburst also was seen on June 14 by Deep Impact, the Hubble Space Telescope and by ground based...

08eccbd2c009f41caaa0f61de4b7bb071
2004-12-21 07:50:00

The Deep Impact mission will send a large copper projectile crashing into the surface of a comet at more than 20,000 miles per hour, creating a huge crater and revealing never before seen materials and the internal compostion and structure of a comet. Astrobiology Magazine -- In the movie "Deep Impact," NASA astronauts try to prevent a comet from hitting Earth. When the mission fails, as a last desperate act they fly their spacecraft into the comet, blowing it to smithereens. Although there...


Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'