A rare green Hallowe’en comet will be visible in the night sky over the next few weeks before it vanishes for 1,300 years.

The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a ...

Scientists just observed Mars' nightglow in the visible light spectrum for the very first time. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Scientists just observed Mars' eerie green nightglow in the visible light spectrum for the very first time. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Planetary scientists believe they can now predict the green glow of an aurora in the night sky above Mars, and they have the images to prove it. The first observations of a visible-light aurora from ...

Suppose the sky tonight held a secret in red, green, and violet? From parts of the United States, the aurora borealis could ...

Someday in the future, the first astronauts to explore the north and south poles of Mars may trek across the dusty ice by the eerie green light of oxygen atoms high in the Martian atmosphere. The ...

By capturing the same thing from very different perspectives, a NASA astronaut and an intrepid photographer create a whole ...

These spots along Lake Superior offer stellar stargazing and the potential to spot the elusive aurora thanks to their dark ...

The European Space Agency's (ESA) ExoMars Trace Gas Orbiter (TGO) mission has detected a soft green glow in the night sky of Mars that is visible to the human eye for the first time. As the orbiter ...