Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

As soon as August, a giant silver bullet will cut its way through the dry air of the southwestern US and cross the Pacific to ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

An overview of the START mission trajectory, showing the spacecraft's orbit-raising phase and high-speed flyby of Apophis at closest approach. Credit: START team/Tsinghua University PADUA, Italy — A ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published in the journal Icarus, this extra world might have triggered a violent ...

Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our own solar system? While distant galaxies reveal clear signs of something ...

2 vanished 'super Earths' once orbited near Uranus and Neptune, new study hints Our solar system may have hosted up to six giant planets in its first hundred million years, a new study suggests. The ...

The standard story of the origin of our solar system has gone like this: 4.6 billion years ago, a giant cloud of dust hung frozen in space. Then the explosion of a nearby star caused part of that dust ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers who discovered it using telescopes from NASA and the European Space Agency, ...

How fast and in which direction is our solar system moving through the universe? This seemingly simple question is one of the key tests of our cosmological understanding. A research team led by ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...