Most of the time, astronomers use high-tech telescopes and expensive equipment to make observations. This time, they just had ...

The search for life beyond Earth is a key driver of modern astronomy and planetary science. The U.S. is building multiple ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have ...

Jupiter, the largest planet in the solar system, has long intrigued scientists seeking to understand its mysterious origins.

A series of studies have cast doubt on the sensational claim that "the strongest evidence yet" was found that life exists anywhere else besides Earth.

Earth’s sister planet reaches greatest western elongation and dichotomy as the waxing Moon slides along the ecliptic in the ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

New research suggests that Jupiter, the largest planet in our solar system, was once even bigger—about twice its current size—and had a magnetic field 50 times stronger than it does today. This ...

It's an evocative idea that has long bedevilled scientists: a huge and mysterious planet is lurking in the darkness at the ...

China has launched an ambitious mission to study two intriguing objects in our solar system, the likes of which have never ...

With an atmosphere, by mass, of primarily hydrogen (76 per cent) and helium (24 per cent), and by volume of 89 per cent ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...