If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...

If an isotope is heavier, it is more likely to stay in a planet’s atmosphere. Lighter isotopes are more likely to be lost into space. When compared to Earth, Mars has more of a heavier isotope ...

Over a decade ago a theory was floated that a primitive civilization on Mars was eradicated by a nuclear explosion, but NASA ...

Mars, the fourth planet from the Sun, is a rocky planet that is a little more than half the Earth's diameter. It has a very thin atmosphere compared to Earth, consisting primarily of carbon ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above some clouds before dawn. It’s twice as tall ...

"When thinking of a Mars-like atmosphere on Earth, one might easily think of ... when measured and compared with the known position of the sun, also revealed the altitude of the Martian dust ...

Mars' atmosphere is also mostly composed ... Scientists routinely compare small, rocky exoplanets to Earth, Venus and Mars to get a better sense of their habitability. The routinely accepted ...

Earth's atmosphere is thick enough to retain enough heat to sustain life by what's known as the greenhouse effect. But on Mars, the atmosphere is so slight that the nighttime temperature drops ...

While one might think only comparatively gigantic impacts are strong enough to send hunks of a planet beyond its atmosphere ... pulled towards Earth. Astronomers believe Mars faced 10 events ...