A newly identified Kuiper Belt trio, possibly only the second of its kind, could provide strong evidence that these distant ...

Hubble has taken some spectacular images of many different galaxies, but it can't resolve more than a few blobs on Pluto's ...

In 1994, astronomers using the Hubble Telescope provided an important close-up view of Pluto. Hubble captured what was, at the time, the most detailed image of the dwarf planet. The result?

The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, and has most recently been popularized in the novel and television show '3 ...

It's a new type of three-body problem for astronomers, who used the Hubble Space Telescope to determine that twin asteroids ...

Astronomers have discovered what they believed to be a rare stable trio of gravitationally bound Kuiper Belt objects, ...

NASA's New Horizons spacecraft conducted the first and only flyby of the Pluto system, culminating at the closest approach of that distant world in July 2015. Sailing onward, the probe carried out ...

Before New Horizons, the best images of Pluto revealed nothing more than a few light and dark patches. The best Hubble Telescope images were only 150 pixels across. The new pictures show much more ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague?

Fortunately, New Horizons carries key instrumentation — the Solar Wind Around Pluto (SWAP ... but also from the Hubble Space Telescope, the James Webb Space Telescope, and from Earth-based ...

NASA's Hubble Space Telescope has discovered that a system of asteroids in the distant Kuiper Belt may be triplets, not twins as previously suspected. If so, the stable trio of icy space rocks ...