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

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

The knock-on changes from a super-Earth – dubbed Phaeton by the researchers – were intriguing. "If it's one or two Earth masses, which is still a pretty big planet, our inner Solar System ...

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...

Kosmos-482, a spacecraft bound for Venus in 1972, was a time capsule from the Cold War when superpowers had broad ambitions ...

Apr. 15, 2025 — A new study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in ... types of planets outside of our solar system, according to a new ...

Our solar system consists of four small, rocky, inner planets (Mercury, Venus, Earth and Mars ... Astrophysical Observatory, which is part of the CfA. "This result suggests that in Jupiter ...

So scientists have had to look at what the Earth looks like now and at all of the other planets, moons and debris in the solar system. They’ve concluded ... In fact, scientists believe that the Moon ...

Aisling O'Hare, who led the study, told Newsweek she's "excited" about what the science world can learn from the data.

Sporadic E layers lit up during a solar storm, moving from poles to equator—surprising researchers and revealing potential ...

drenching Earth and the entire solar system in a flood of electrons, protons, and helium nuclei. But this isn't a smooth breeze—it's a turbulent river with fast and slow currents that spark ...