Scientists using NASA's James Webb Space Telescope have observed a rare type of exoplanet, or planet outside our solar system, whose atmospheric composition challenges our understanding of how it ...

But in this case, the companion is officially considered an exoplanet, not a star. The International Astronomical Union defines an exoplanet as a celestial body below 13 Jupiter masses that orbits a ...

Outer space never fails to remind us just how much we don't know. Astronomers have uncovered a lemon-shaped planet that ...

Interstellar comet 3I/ATLAS makes its final pass by Earth this week. Its speed of 137,000 mph and unique chemical makeup have put planetary experts on high alert.

Experience the exceptional Van Cleef & Arpels Planétarium automaton, a masterpiece of watchmaking and unique narrative design, in Hong Kong.

The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact configuration and later underwent a violent reshuffling that scattered them to ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

When it comes to planets in our Solar System's habitable zone, one world is too close to the Sun, another is too far and Earth is just right. But maybe things would be different if Venus and Mars ...

Proba-3 is creating artificial solar eclipses in space, giving scientists a steady new way to study the Sun’s inner corona ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.