Chad Trujillo – Astronomy Now

20 January 2022

Latest News

[ 17 January 2022 ] Black hole contains nearly all the mass at the heart of the Milky Way News
[ 10 January 2022 ] Webb mirrors fully deployed, clearing the way for alignment News
[ 5 January 2022 ] ‘We nailed it!’ Webb clears major hurdle with full sunshade deployment News
[ 3 January 2022 ] NASA holds up final Webb sunshade deploy to double check readiness News
[ 31 December 2021 ] Webb ready for critical work to open sunshield News

Evidence for an impact event on main-belt asteroid Griseldis

13 November 2015 Astronomy Now

The main-belt asteroid (493) Griseldis, that lies between the orbits of Mars and Jupiter, was probably hit by another object last March. The results were reported on 12 November at the 47th Annual Meeting of the Division for Planetary Sciences of the American Astronomical Society near Washington, DC.

Newly discovered dwarf planet is solar system’s most distant object

12 November 2015 Astronomy Now

Astronomers have found a dwarf planet three times farther away from the Sun than Pluto, making it the most distant known object in the solar system. Designated V774104, the body is 500 to 1000 kilometres in diameter and is currently 15.4 billion kilometres, or 103 astronomical units (AU) from the Sun, but its exact orbit is yet to be determined.