The spacecraft will map the boundaries of the heliosphere, study how Earth’s outer atmosphere reacts to solar activity and ...

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.

Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

At the vast edge of the solar system, Pluto has long been perceived as a cold and lonely dwarf planet. However, a recent ...

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and ...

During observations of Pluto, an astonishing discovery gradually emerged—there seems to be ice volcanoes on Pluto. This ...

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf ...

Astronomers around the world have confirmed over 6,000 exoplanets, a milestone reached in September 2025. Billions more are waiting to be discovered.

By studying the chemical composition of an odd, dying star, astronomers discovered that it had been feasting on what used to ...

Pluto has long been one of the most debated celestial bodies in our solar system. Once classified as the ninth planet, it was redefined in 2006 as a dwarf planet, a decision that still sparks ...