See also stories tagged with Comet

Search results for Comet

Astronomy Oct 19, 2020

The Milky Way galaxy has a clumpy halo

The Milky Way galaxy is in the recycling business.

Space Exploration Oct 18, 2020

Touch-and-go: US spacecraft sampling asteroid for return

After almost two years circling an ancient asteroid hundreds of millions of miles away, a NASA spacecraft this week will attempt to descend to the treacherous, boulder-packed surface and snatch a handful of rubble.

Astronomy Oct 13, 2020

Simulations reveal that rocky super-Earths with thin atmospheres are often protected by a Jupiter-like planet

An international group of astronomers, led by Martin Schlecker of the Max Planck Institute for Astronomy, has found that the arrangement of rocky, gaseous and icy planets in planetary systems is apparently not random and ...

Space Exploration Oct 11, 2020

Fake asteroid? NASA expert IDs mystery object as old rocket

The jig may be up for an "asteroid" that's expected to get nabbed by Earth's gravity and become a mini moon next month.

Astronomy Oct 09, 2020

The legacy of of the Spitzer Space Telescope

To understand the significance of the Spitzer Space Telescope on the understanding of our solar system, think of what the steam engine meant for the industrial revolution.

Space Exploration Oct 07, 2020

Looking for pieces of Venus? Try the moon

A growing body of research suggests the planet Venus may have had an Earth-like environment billions of years ago, with water and a thin atmosphere.

Astronomy Oct 07, 2020

Was the moon magnetized by impact plasmas?

The moon, Mercury and many meteorite parent bodies contain a magnetized crust, which is commonly credited to an ancient core dynamo. A longstanding alternative hypothesis suggests the amplification of the interplanetary magnetic ...

Astronomy Oct 05, 2020

It took several million years for Arrokothn to acquire its bizarre, pancake-flat shape

The trans-Neptunian object Arrokoth, also known as Ultima Thule, which NASA's space probe New Horizons passed on New Year's Day 2019, may have changed its shape significantly in the first 100 million years since its formation. ...

Astronomy Sep 29, 2020

Second alignment plane of solar system discovered

A study of comet motions indicates that the solar system has a second alignment plane. Analytical investigation of the orbits of long-period comets shows that the aphelia of the comets, the point where they are farthest from ...

Astronomy Sep 29, 2020

Video shows a meteoroid skipping off Earth's atmosphere

Here's something we don't see very often: an Earth-grazing meteoroid.

page 1 from 100