Full Video- http://www.youtube.com/watch?v=WHNO079G1i8 Pluto, Eris, and the Dwarf Planets of the Outer Solar System Exploring Space Lecture webcast live on Tuesday ...

Astronomers using the Hubble Space Telescope have observed a white dwarf – a highly compact stellar ember – that appears to have gobbled up an icy world akin to the dwarf planet Pluto, a finding with ...

Our solar system is much like a trail of microcosmic breadcrumbs: Follow the molecular bits as far back as they go, and you'll learn a thing or two about where many of our planets and other celestial ...

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

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure ...

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

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

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

For the first time since 2008, two new planets are being added to one of northern Maine's most famous — and scientifically accurate — roadside attractions. Dwarf planets Haumea and Makemake are the ...