The Earth's Moon is its only one, but scientists recently discovered a new celestial body that will be staying near the planet for the next several decades.

What began with tragedy ended in triumph. This is the untold story of the European Space Agency's pioneering 25-year Cluster ...

The house that Jupiter occupies in our astrological natal chart represents our connection to expansion, luck, and our highest ...

The concept, ripped from a Star Trek episode, would fill Earth's orbit with satellites to harness energy from the Sun and ...

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This ...

There are now over 10,000 satellites in orbit, more than at any point in history, and this growing number is starting to ...

Jupiter will reach its highest point in the sky around dawn, when, from mid-northern latitudes, it will appear about 20 ...

About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 b ushered in a new era of exoplanet research.

Let's be real, the discovery of the interstellar comet 3I/ATLAS was pretty exciting on its own. But then headlines started ...

Manhattan-sized comet 3I/ATLAS — which scientists suspect could have extraterrestrial origins — will reach its closest ...