Most SETI attempts have focused on a narrow stretch of the radio spectrum known as the “water hole." ...

Astronomers have discovered a remarkably tiny group of six young galaxies just 1.2 billion years after the Big Bang. This may ...

“The detection of erythrulose is very exciting because it opens up the possibility of discovering in space other sugars such ...

China’s Tianwen-1 orbiter captured a faint but remarkable view of 3I/ATLAS as the interstellar comet raced past Mars. The ...

What has eluded detection so far have been exosatellites: moons orbiting those remote planets. Our solar system is home to a ...

Fred Schaaf discusses an upcoming Skywatch and describes some of the great deep-sky objects you should be able to see during ...

Astronomers have found the first confirmed atmosphere around a rocky planet in another star’s habitable zone. The planet, LHS 1140 b, revealed its atmosphere through helium slowly leaking into space.

It was the first-ever Mars landing for NASA. Viking 1, along with its twin Viking 2, went on to conduct the first fully ...

"Viking more likely than not found autotrophic microbial life on Mars, roughly 1,000 cells per gram." When you purchase ...

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Half a century after the first successful Mars landing, Viking's greatest legacy may be the questions it taught us to ask.

A quasar — among the universe’s most luminous and energetic objects — is a supermassive black hole caught in the act of guzzling matter at the ​heart of a galaxy. Scientists have now found quasars ...