New Technique Reveals Mass and Orbit of Exoplanet

New Technique Reveals Mass and Orbit of Exoplanet

  Tau Boötis b is six times the mass of Jupiter   One of the first planets discovered outside of the Solar System, Tau Boötis b, has eluded numerous attempts to measure the light coming from its atmosphere and so has remained something of a mystery. Now, for the first time, an international team has used an [continue reading]

Mars had Underground Water During its First Billion Years

Mars had Underground Water During its First Billion Years

  By studying rocks blasted out of impact craters, ESA’s Mars Express has found evidence that underground water persisted at depth for prolonged periods during the first billion years of the Red Planet’s existence. The large 25 km-diameter crater in the foreground has excavated rocks which have been altered by groundwater in the crust before [continue reading]

Newly Found Primitive Mineral in the Allende Meteorite

Newly Found Primitive Mineral in the Allende Meteorite

  In 1969, an exploding fireball tore through the sky over Mexico, scattering thousands of pieces of meteorite across the state of Chihuahua. More than 40 years later, the Allende meteorite is still serving the scientific community as a rich source of information about the early stages of our Solar System’s evolution. Recently, scientists from [continue reading]

Rare Gravitational Arc from Distant, Hefty Galaxy Cluster

Rare Gravitational Arc from Distant, Hefty Galaxy Cluster

  Seeing is believing, except when you don’t believe what you see.   Astronomers using NASA’s Hubble Space Telescope have found a puzzling arc of light behind an extremely massive cluster of galaxies residing 10 billion light-years away. The galactic grouping, discovered by NASA’s Spitzer Space Telescope, was observed when the universe was roughly a [continue reading]

Radio Galaxies in the Distant Universe

Radio Galaxies in the Distant Universe

  For over a decade astronomers have been probing a region of the northern sky, not far from the handle of the Big Dipper, that is relatively free of bright stars and the diffuse glow of the Milky Way. The scientists want to take advantage of the clarity of the sky there to peer beyond [continue reading]

Why Jet Streams Cross-Cut Saturn

Why Jet Streams Cross-Cut Saturn

  Turbulent jet streams, regions where winds blow faster than in other places, churn east and west across Saturn. Scientists have been trying to understand for years the mechanism that drives these wavy structures in Saturn’s atmosphere and the source from which the jets derive their energy. A particularly strong jet stream churns through Saturn’s [continue reading]