Sentences with phrase «most of the large asteroids»

Most of the large asteroids in the Asteroid Belt are already known, so this means that either the meteorite originated on an asteroid that has been eroded, or there is another large asteroid out there.

Not exact matches

These facilities, most notably the Large Synoptic Survey Telescope (LSST) set to debut in 2020, promise to revolutionize the field of «transient» astronomy — the study not of steady - shining stars and galaxies, but of the things that rapidly move and change: exploding stars, whirling asteroids and comets, and anything else that goes «bump!»

These core samples contain bits of the original granite bedrock that was the unlucky target of cosmic wrath 66 million years ago, when a large asteroid struck Earth, blasted open the 180 - kilometer - wide Chicxulub crater, and led to the extinction of most life on the planet.

New images indicate that most of the cavities are secondary impacts from rocks kicked up when large asteroids hit.

That feature — in which the crust thickness drops from 30 to about 10 miles (50 to 20 kilometers) over a large area that is the most visible feature on Mars — has been known to astronomers for more than 30 years and was long suspected to be due to an asteroid impact that flung most of the crust out the area.

But in spite of this, most civilian astronomers believe that tackling the catastrophically large but very rare impacts should be the first priority («How to destroy the doomsday asteroid», New Scientist, 6 June).