The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the sky each night after sunset, according to NASA. While Mercury will briefly ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

In a humorous take, the solar system is imagined with desi moms giving advice to their planetary children. From Mercury being ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

Data collected from a once-defunct NASA satellite show that Earth grew two extra radiation belts following a supercharged ...

(The last time all seven planets aligned was on April 8, 2024, during the total solar eclipse). Aug. 29, 2025: Six planets – ...

If the solar system held a poetry slam, each planet would present its unique poetic style. Mercury delivers rapid-fire verses ...

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 formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

New research shows that star activity can distort exoplanet measurements, affecting size, temperature, and atmosphere ...