Orbiting observatories were supposed to escape the glow and clutter that plague ground-based astronomy, but the next ...

December's full 'cold moon' lived up to its name. Here's what people saw when they gazed up into the night sky.

December nights are the longest — and often some of the coldest — of the year. While some may dread December’s darkness, ...

Like a toddler right before naptime, TRAPPIST-1 is a small yet moody star. This little star, which sits in the constellation ...

December nights are the longest — and often some of the coldest — of the year. While some may dread December’s darkness, ...

Megaconstellations” of vast numbers of satellites could threaten space-based astronomy, scientists have warned. In recent years, companies such as Elon Musk’s SpaceX have launched thousands of new ...

It's no mystery why December's full moon is commonly referred to as the "Cold Moon," or the "Winter Maker Moon," according to ...

Deployment of tens of thousands of communication satellites in low Earth orbit (LEO) is creating a diffuse veil of light ...

A 20-year-old planetarium, never used before, rediscovered by accident, now helps students explore constellations from new perspectives.

Almost every image that will be taken by future space observatories in low-Earth orbit could be tainted due to light contamination from satellites. That is according to a new analysis from researchers ...

If the moon looks a bit bigger, it’s not your imagination. The last supermoon of the year is making its appearance on ...

Light from the half a million satellites that humanity is planning to launch into Earth's orbit in the coming years could ...