The mystery of how Pluto got a giant heart-shaped ... lower strength would result in a very symmetrical leftover surface feature that does not look like the teardrop shape observed by New Horizons.

Sputnik Planum is about the size of Texas but it's completely different and could even have Earth-like glaciers: Right now, the temperatures on Pluto's surface are around -380F which are too cold ...

Jennings compiled the images to show what Pluto's orbit looks like. The red arrows serve as ... re brightness variations on a completely smooth surface," Jeff Moore, a planetary scientist at ...

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small ... that are gases or liquids on the surface of Earth, like water, methane, and carbon dioxide.