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Visible planets and night sky guide for September 2024. Mercury will pass the star Regulus from September 8 to 10. Look about 40 minutes before sunrise.
A new study shows there is likely much more water on exoplanets than previously thought. Most of it would be hidden in a planet's interior.
Do you want to see 6 planets at once? Wake up before sunrise and start hunting! Mars, Jupiter and Saturn will be easy. Learn how to find the others here.
Exoplanets are worlds orbiting distant stars. Watch a video with an astronomer who studies them. Learn the history of our knowledge of exoplanets, and more.
By measuring radiation levels, astronomers using the Chandra X-ray Observatory and XMM-Newton satellite said some nearby stars could have habitable exoplanets.
There's a lineup of 6 planets in the morning sky in early June. Will you see all of them? Find charts and observing tips here.
Astronomers using NASA's Webb telescope have discovered and imaged two possible giant planets orbiting white dwarfs less than 75 light-years away.
Researchers at Yale University said habitable planets in binary star systems - so-called Tatooine exoplanets - may be more common than previously thought.
A new study says that rocky habitable exoplanets likely have less carbon dioxide in their atmospheres as compared to similar planets in the same system.
The James Webb Space Telescope has discovered something unexpected in the Orion Nebula: pairs of unusual planet-like 'binary objects' drifting freely in space.
NASA's James Webb Space Telescope has found molecular building blocks of rocky exoplanets in a region previously thought to be too extreme and hostile.
Scientists say they may have solved the mystery of shrinking exoplanets. Radiation from the cores of less massive sub-Neptunes pushes away their atmospheres.
In a new study, astronomers say that at least some of the 7 Earth-sized TRAPPIST-1 exoplanets could be habitable now, even if they didn't start out that way.
A new study from researchers in Germany shows that stellar winds from cool stars with strong magnetic fields can be more powerful than ones from hotter stars.
A new study predicts that NASA's upcoming Roman space telescope will find 400 Earth-mass rogue planets. These worlds drift freely in space, unbound to any star.
Can 2 planets share an orbit? Astronomers have long believed they could, and a new image is finally providing photographic evidence of the possibility.
On July 18, 19 and 20, 2023, the moon visits 3 rocky planets in the west. Mercury, Venus and Mars will all pair up with the moon on back-to-back nights.
Scientists say they have discovered a new type of planetary formation called "sandwich exoplanets." This is where a small planet will form between 2 large ones.
Seen from space, both stars and planets shine steadily, but seen from Earth, stars twinkle while planets (usually) do not. Here’s why.
5 planets align on June mornings. But only two of them - Jupiter and Saturn - are easy to see. Learn more about the planetary lineup here.