H2S tagged posts

This series of Hubble Space Telescope images taken over 2 years tracks the demise of a giant dark vortex on the planet Neptune. The oval-shaped spot has shrunk from 3,100 miles across its long axis to 2,300 miles across, over the Hubble observation period. Credit: NASA, ESA, and M.H. Wong and A.I. Hsu (UC Berkeley)

Three billion miles away on the farthest known major planet in our solar system, an ominous, dark storm – once big enough to stretch across the Atlantic Ocean from Boston to Portugal – is shrinking out of existence as seen in pictures of Neptune taken by NASA’s Hubble Space Telescope. Immense dark storms on Neptune were first discovered in the late 1980s by NASA’s Voyager 2 spacecraft...

Schematic illustration showing chemical desorption is at work in interstellar molecular clouds. Molecules are released from an ice dust surface using excess energy from a chemical reaction. Credit: Hokkaido University

Researchers demonstrate how a gas escapes ice at an extremely cold temperature, providing insight about how stars form in interstellar clouds. The mechanism by which hydrogen sulphide is released as gas in interstellar molecular clouds is described by scientists in Japan and Germany. Chemical desorption, is more efficient than previously believed, and this has implications for our understanding of star formation in molecular clouds.

Molecular clouds are rare, but are important parts of the galaxy where molecules form and evolve...