The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Since the first discovery of planets beyond the solar system in 1995, more than 6,000 exoplanets have been identified. Many ...

A team of scientists has investigated how Earth’s twin became so inhospitable, and whether the same will happen to our planet ...

The Solar System is home to a remarkable range of planets, from tiny rocky worlds to massive gas giants. But just how big are ...

On Mars, things are a lot more static. It’s a single-plate planet with incredibly slow mixing. When InSight peered into the ...

A high-precision time measurement system based on the radioactive decay of manganese-53 was used to determine the precise age ...

But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...

Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

The odds for life existing on other planets has just skyrocketed after a NASA rover unearthed new evidence on Mars. The odds ...

NASA’s Perseverance rover has recently discovered the biosignature, revealing the possibility of ancient life that once ...

The space rock will make its closest approach—at a cosmically slight 183,000 miles from our planet—later today, according to ...

Other good stops for stargazing are on Palomar Mountain, “especially going down East Grade Road and overlooking Lake Henshaw.