Quantcast

Latest David C. Jewitt Stories

2014-03-06 12:21:05

WASHINGTON, March 6, 2014 /PRNewswire-USNewswire/ -- NASA's Hubble Space Telescope has recorded the never-before-seen break-up of an asteroid into as many as 10 smaller pieces. http://photos.prnewswire.com/prnvar/20081007/38461LOGO Fragile comets, comprised of ice and dust, have been seen falling apart as they near the sun, but nothing like this has ever before been observed in the asteroid belt. "This is a rock, and seeing it fall apart before our eyes is pretty amazing," said...

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...

d379d80fae5d89e514bba24722be8051
2010-12-12 16:00:00

The Geminid meteor shower, which peaks this year on Dec. 13th and 14th, is the most intense meteor shower of the year. It lasts for days, is rich in fireballs, and can be seen from almost any point on Earth. It's also NASA astronomer Bill Cooke's favorite meteor shower"”but not for any of the reasons listed above. "The Geminids are my favorite," he explains, "because they defy explanation." Most meteor showers come from comets, which spew ample meteoroids for a night of 'shooting...

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...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
Related