The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe. Clyde Tombaugh didn't set out to discover Pluto when he sent his ...

“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 ...

FLAGSTAFF, Az. – Whether Pluto is officially a planet is the least interesting thing about the runt of the solar system, astronomers will tell you 95 years after the discovery of the fascinating ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...

This strange object near the solar system's edge may be a rare example of the 3-body problem in our own cosmic neighborhood.

Here's what to know about the short life of what was, for a single human lifetime, the solar system's smallest planet. Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the ...

Venus, Mars, Jupiter, Saturn, Uranus, and Neptune were already visible in the night sky after dusk this month, but Mercury joined them on Feb. 28. While it's common to see a few planets line up in the ...

Related: New Horizons: Exploring Pluto and beyond That report also noted that "moving outward, the boundary of the solar system where the sun's influence wanes and is replaced by the interstellar ...

Its nuclear power generating system will perhaps last into 2050 ... Fortunately, New Horizons carries key instrumentation — the Solar Wind Around Pluto (SWAP) and Pluto Energetic Particle ...