For generations of schoolchildren, the solar system had nine planets. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune — and Pluto, the tiny, distant ...
The first observed interstellar object zipped through our solar system in October 2017 -- and astronomers have been trying to understand it ever since. Scientists scrambled to observe the object ...
Watching Pluto From Afar: The Magic of Stellar Occultations For the past decade, astronomers have kept a close eye on Pluto’s ...
A Southwest Research Institute-led team has reported the first detection of gas on the distant dwarf planet Makemake, using NASA's James Webb Space Telescope (JWST). This discovery makes Makemake only ...
(CNN) — Astronomers have detected a thin atmosphere around a tiny celestial body in the outer solar system for the first time — an object previously thought to be too small to support the presence of ...
Twenty years after Pluto became a dwarf planet, people are still fighting over its status. Experts explain why the debate feels so personal.
Pluto was discovered in 1930 by astronomer Clyde Tombaugh. On Aug. 24, 2006, the International Astronomical Union passed a resolution reclassifying Pluto from a planet to a dwarf planet. Pluto is ...
For 76 years, generations of students learned that our solar system had nine planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Now, in 2026, some still can't get over ...
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