Video: Saturn moon eclipses neighbour The Cassini probe has caught its first glimpse of one Saturn moon eclipsing another, as the moon Enceladus passed in front of its neighbour Mimas. Most of Saturn’s moons orbit in the same plane as its rings, along the planet’s equator. This arrangement creates frequent alignments, but eclipses are rare …
Radio telescopes detect a large cloud of hydrogen gas (contour lines) where no stars can be found (Image: R Minchin/Arecibo Observatory/Cardiff U/Isaac Newton Telescope/WSRT) Neutral hydrogen gas streams between NGC 4254 (top left) and the dark galaxy VIRGOH121 (centre right) in this radio image. The new study suggests VIRGOHI21’s gravity is responsible for NGC …
29 July 2009 by Pedro Ferreira Magazine issue 2719. Subscribe and get 4 free issues. WE LIVE in a special time. For the past two decades, most of my colleagues and I have been working under the assumption that we can know everything about the universe. We know the amount of matter and energy it …
Dark energy may be bending the universe out of shape – New Scientist Magazine Read More »
02 September 2009 by Stephen Battersby DARK energy – the mysterious stuff that is causing the universe’s expansion to accelerate – could be illuminated by another dark enigma: the black hole. Supermassive black holes are thought to exist at the core of most galaxies. When two galaxies collide and merge, these black holes will go …
Dark energy lit up by black-hole pairs – New Scientist Magazine Read More »
The polygons in Coyote Dry Lake in California’s Mojave Desert (left panel), which span 50 to 80 metres across, are closer in size to the Martian crater polygons (right panel). Coyote Dry Lake dried up thousands of years ago. Giant cracks that crisscross to form polygons have been imaged on the floors of hundreds of …
