Earth" and a massive outer planet, revealing insights into extreme planetary evolution. An international research team, led ...

Alinda has made its closest approach to our planet in decades, and it's about to peak in brightness in a rare ...

The asteroid, named 2025 AB, is expected to pass us at a distance of 95,200 miles, about twice as close as the orbit of the ...

Astronomy has unveiled some of the most impressive results: two Earth-sized Exoplanets orbiting a very nearby star called HD ...

Mars’ strangely small mass still puzzles planetary scientists. Definitive answers as to why are still hard to come by.

In the near term ... true Earth twin. A planet that's about Earth's size, about Earth's mass, orbiting a Sun-like star in an ...

Smaller gas giants are less likely to survive in such systems, surrounded by clashing planetary titans. With their lower ...

Previous observations suggested that Ceres was less than 30% ice, and its craters were thought to imply that the dwarf planet ... close to Earth," Sori said. "Ceres may be a valuable point of ...

Since its launch in April 2018, the satellite has been conducting a survey of about 200,000 of the brightest stars near ... Earth radii. More information: Michelle Kunimoto et al, Two Earth-size ...