Astronomy

Astronomy

Half of all active satellites are now from SpaceX. Here’s why that may be a problem

Of the roughly 7,300 active satellites in Earth orbit, about 3,600 are part of SpaceX’s growing fleet of Starlink internet satellites.

Astronomy

The Milky Way may be spawning many more stars than astronomers had thought

Glowing radioactive debris from massive stars indicates our galaxy mints 10 to 20 new stars a year — double to quadruple the standard number.

Astronomy

The James Webb telescope found six galaxies that may be too hefty for their age

The galaxies formed in the universe’s first 700 million years and may be up to 100 times more massive than predicted.

Astronomy

The James Webb telescope spotted the earliest known ‘quenched’ galaxy

A galaxy dubbed GS-9209 ceased forming stars more than 12.5 billion years ago after a 200-million-year-long sprint.

Astronomy

The Kuiper Belt’s dwarf planet Quaoar hosts an impossible ring

Quaoar’s ring lies outside the Roche limit, an imaginary line beyond which rings aren’t thought to be stable.

Astronomy

Lots of Tatooine-like planets around binary stars may be habitable

A new simulation suggests that planets orbiting a pair of stars may be plentiful, and many of those worlds could be suitable for life.

Astronomy

New data show how quickly light pollution is obscuring the night sky

Tens of thousands of observations from citizen scientists spanning a decade show that the night sky is getting about 10 percent brighter every year.

Astronomy

The James Webb telescope found ‘Green Pea’ galaxies in the early universe

The James Webb telescope spotted tiny “green” galaxies that might have helped trigger a dramatic cosmic makeover more than 13 billion years ago.

Planetary Science

Methylated gases could be an unambiguous indicator of alien life

On Earth, methylated gases are produced by organisms cleaning up their environment — and by little else. The same might be true on some exoplanets.

Astronomy

The James Webb Space Telescope wasn’t the only big space news in 2022

DART crashed into an asteroid, Artemis went to the moon and we got a pic of our galaxy’s monstrous black hole. Space was a busy place this year.

Astronomy

The James Webb telescope is getting glimpses of small, far-off planets

Hints of one exoplanet atmosphere’s chemical makeup and the discovery of a planet orbiting another star are two of the telescope’s early successes.

Astronomy

The first planet found by the Kepler space telescope is doomed

The exoplanet dubbed Kepler 1658b is spiraling toward its host star and will meet a fiery death in less than 3 million years.