Quantcast

Latest David Jewitt Stories

Hubble Space Telescope Catches Asteroid Breaking Up Due To Sunlight
2014-03-06 12:11:47

[ Watch the Video: The Breakup of Asteroid P/2013 R3 ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers publishing a paper in the Astrophysical Journal Letters say they witnessed an asteroid breakup into as many as 10 smaller pieces. The team used NASA/ESA's Hubble Space Telescope to photograph the asteroid as it shredded when nearing the sun. "Seeing this rock fall apart before our eyes is pretty amazing," David Jewitt, a professor in the UCLA Department of Earth,...

Six-Tailed Asteroid Caught By NASA's Hubble Space Telescope
2013-11-07 15:50:06

Lee Rannals for redOrbit.com - Your Universe Online Astronomers using the NASA Hubble Space Telescope have witnessed an asteroid with six comet-like tails of dust. NASA said the asteroid, designated P/2013 P5, resembles a rotating lawn sprinkler with the dust radiating from it like water being whipped around a yard. P/2013 P5, located in our Solar System’s asteroid belt, is puzzling astronomers with its unusual appearance. "We were literally dumbfounded when we saw it," said lead...

New Insight On Phaethon Rock Comet
2013-09-10 12:42:19

Lee Rannals for redOrbit.com - Your Universe Online Phaethon is a confusing sun-grazing asteroid, complete with a tail of dust particles similar to what is seen on a comet. But what makes it an asteroid rather than a comet? Scientists at the European Planetary Science Congress in London have helped explain this apparent conundrum. According to research presented by David Jewitt, Phaethon's tail becomes so hot when it approaches the sun that rocks on the surface crack and crumble to dust...

Spinning Object Discovered In The Kuiper Belt
2011-10-03 09:07:55

[ Watch the Video ] The bizarre, hourglass-shaped Kuiper belt object 2001QG298 spins round like a propeller as it orbits the Sun, according to an astronomer from Queens University Belfast.   The discovery that the spinning object is tilted at nearly 90 degrees to the ecliptic plane is surprising, and suggests that this type of object could be very common in the Kuiper belt. The finding will be presented by Dr Pedro Lacerda at the Joint Meeting of the European Planetary Science...

f48e7a275343afdcbc0019e72e779c591
2011-04-28 11:40:00

Frank Reddy, NASA's Goddard Space Flight Center, Greenbelt, Md. Late last year, astronomers noticed an asteroid named Scheila had unexpectedly brightened, and it was sporting short-lived plumes. Data from NASA's Swift satellite and Hubble Space Telescope showed these changes likely occurred after Scheila was struck by a much smaller asteroid. "Collisions between asteroids create rock fragments, from fine dust to huge boulders, that impact planets and their moons," said Dennis Bodewits, an...

eacab571a9e95bbca29551a64bb0a886
2010-10-13 13:40:00

NASA's Hubble Space Telescope has captured the first snapshots of a suspected asteroid collision. The images show a bizarre X-shaped object at the head of a comet-like trail of material. In January, astronomers began using Hubble to track the object for five months. They thought they had witnessed a fresh asteroid collision, but were surprised to learn the collision occurred in early 2009. "We expected the debris field to expand dramatically, like shrapnel flying from a hand grenade," said...

2010-02-02 09:01:00

WASHINGTON, Feb. 2 /PRNewswire-USNewswire/ -- NASA's Hubble Space Telescope has observed a mysterious X-shaped debris pattern and trailing streamers of dust that suggest a head-on collision between two asteroids. Astronomers have long thought the asteroid belt is being ground down through collisions, but such a smashup has never been seen before. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) Asteroid collisions are energetic, with an average impact speed of more than...

b07d32181d1a1c77dfceefca8a3dd752
2010-02-02 09:40:00

NASA's Hubble Space Telescope has observed a mysterious X-shaped debris pattern and trailing streamers of dust that suggest a head-on collision between two asteroids. Astronomers have long thought the asteroid belt is being ground down through collisions, but such a smashup has never been seen before. Asteroid collisions are energetic, with an average impact speed of more than 11,000 miles per hour, or five times faster than a rifle bullet. The comet-like object imaged by Hubble, called...

5180c85b102232c344de6f8908b1f0441
2009-09-16 05:20:00

Astronomers from the University of California, Los Angeles and the University of Hawaii have discovered multiple fragments ejected during the largest cometary outburst ever witnessed. Images and animations showing fragments rapidly flying away from the nucleus of comet 17P/Holmes will be presented by Rachel Stevenson at the European Planetary Science Congress in Potsdam, Germany, on Wednesday September 16. Stevenson, together with colleagues Jan Kleyna and David Jewitt, began observing comet...


Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.