This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

Is frozen water scattered in systems around other stars? Astronomers have long expected it is, partially based on previous ...

Did you know our solar system might have had an extra planet? Scientists believe a mysterious ninth planet once existed but ...

According to NASA, the aurora on Earth may last only a few minutes, but on Saturn, it can last for days. In the 2010s, aurora ...

A reappraisal of decades-old data suggests that strange circular formations on Venus could be volcanic “rings of fire” ...

A nameless megayacht drew the attention of Southern California locals who wanted answers. In a San Diego subreddit, photos of ...

Astronomers didn’t even know sub-Neptunes existed until NASA’s Kepler mission uncovered them over the past decade. Although a ...

Scientists have reported that data captured by NASA's JWST reveals stunning details about Jupiter's auroras. Also called the ...

Mysterious, spherical' object detected by NASA is travelling at one million miles per hour. There is still no identification ...

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A Soviet spacecraft launched in 1972 for Venus re-entered Earth's atmosphere uncontrollably today and there is uncertainty ...

Sub-Neptunes, planets with diameters bigger than Earth's but smaller than Neptune's, are the most prevalent form of exoplanet ...