Triton was discovered in 1846 by the British astronomer William Lassell, but much about Neptune’s largest moon still remains a mystery. A flyby by NASA's Voyager 2 spacecraft in 1989 offered a quick ...

Add another moon to the New Horizons photo gallery: the spacecraft’s Long Range Reconnaissance Imager detected Triton, the largest of Neptune’s 13 known moons, during the annual spacecraft checkout ...

Eight distant worlds hold secrets that still puzzle scientists and spark endless curiosity. Each moon offers a strange allure ...

An enhanced view of Neptune's largest moon, Triton. Sometimes, astronomy is like a forensic investigation: We can't just rerun the past, so we have to study clues to figure out what happened. And the ...

When we think of moons, we usually think of our Moon. It's bright and familiar, can be seen with the naked eye, and the only one humans have ever set foot on. But in the grand scheme of the solar ...

Five worlds in the solar system have active volcanoes (those that are currently erupting or have erupted in human history): Earth, Jupiter’s moons Io and Europa, Neptune’s moon Triton, and Saturn’s ...

Neptune’s large moon Triton may have abandoned an earlier partner to arrive in its unusual orbit around Neptune. Triton is unique among all the large moons in the solar system because it orbits ...

This "family portrait" of Uranus' five largest moons was compiled from images sent back on Jan. 20, 1986, by the Voyager 2 spacecraft. In this comparison, we see the relative sizes and relativities of ...

Spend five seconds on Triton, Neptune’s moon, and witness the extreme conditions firsthand. Pilot who tried to cut engines ...

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