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Tag: “hydrogen sulfide”

An isolated hill in the Medusae Fossae Formation. The effect of wind erosion on this hill is evident by its streamlined shape. (High Resolution Stereo Camera/European Space Agency)

Volcanic Activity Created Martian Geological Oddity

June 19, 2018

Scientists have long been puzzled by a mysterious formation located near the equator of Mars called Medusae Fossae. A new study from a pair of scientists – Lujendra Ojha and Kevin Lewis – at the Johns Hopkins University in Baltimore suggests that the large deposit of soft rock was probably formed as a result of violent volcanic eruptions that […]

This series of Hubble Space Telescope images taken over 2 years tracks the demise of a giant dark vortex on the planet Neptune. (NASA, ESA, and M.H. Wong and A.I. Hsu (UC Berkeley))

Hubble Tracks Mysterious Storms on Neptune

February 16, 2018

When NASA’s Voyager 2 visited Neptune, in 1989, scientists noticed immense dark storms swirling in its atmosphere. Since then only the Hubble Space Telescope has had the ability to spot and track these mysterious storms. Hubble found a pair of these dark storms in the mid-1990s and then noticed they later had disappeared completely. The […]

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