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.

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.

Lemmon, which is a rare green comet, can be seen with the naked eye on Oct. 21, according to the Royal Astronomical Society, ...

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 ...

Scientists have observed a fascinating green glow in the Martian night sky for the first time. The visible nightglow was detected in the atmosphere of the Red Planet by the European Space Agency's ...

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...

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 ...

A simulated view of what Mars' night sky might look like at its poles. Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.– E. W. Knutsen The night sky at Mars' poles looks nothing like our own ...

Under new-moon skies, a celestial trifecta unfolds — bright comets, streaking meteors, and possible aurora displays — ...

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 ...

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 ...