A study using a unique new instrument on the world’s largest optical telescope has revealed the likely origins of especially bright supernovae that astronomers use as easy-to-spot “mile markers” to measure the expansion and acceleration of the universe. In a paper to appear in the Astrophysical Journal, researchers describe observations of recent supernova 2011fe that…
For the first time, ESA’s Planck space telescope has detected a bridge of hot gas connecting a pair of galaxy clusters 10 million light-years apart. Abell 399 and Abell 401, each containing hundreds of galaxies, are billions of light years away. The presence of hot gas linking them had already been hinted at in X-ray…
You know we’ve found something new and interesting when scientists don’t really know how to classify it. Using the Subaru Telescope an international team of astronomers has discovered a “super-Jupiter” so massive that it seems they’re not quite sure whether to call it a planet or a low-mass brown dwarf (in other words, a star…
A team of NASA scientists and their colleagues have found evidence from meteorites that Mars and Earth had a similar origin, but then the two planets evolved quite differently. Based on their analyses of two Martian meteorites, researchers have concluded that water in the Martian interior originated from planetary building blocks similar to those that…
Are there dark doings near the center of the Milky Way? That may be so when it comes to the collision of dark matter particles. Although such particles are invisible, we could still theoretically see the mess they make when they collide. It’s this idea that leads physicists to scour the galaxy for some glimmer…
A new celestial wonder has stolen the title of most distant object ever seen in the universe, astronomers report. The new record holder is the galaxy MACS0647-JD, which is about 13.3 billion light-years away. The universe itself is only 13.7 billion years old, so this galaxy’s light has been traveling toward us for almost the…
Initial readings of cosmic ray radiation on Mars suggest it’s about the same as on the International Space Station. Now we just need a spaceship.
Astronomers have discovered what they believe to be a rogue planet floating through space without a star. The super-Jupiter, called CFBDSIR2149, has a mass four to seven times that of our own gas giant, and is probably a scorching 800 or so degrees Fahrenheit. It appears to sit in a moving group of stars that,…
For the past five billion years, the expansion of the Universe has been speeding up, powered by the mysterious repulsive force known as “dark energy.” But thanks to a new technique for measuring the three-dimensional structure of the distant Universe, astronomers from the Sloan Digital Sky Survey have made the first measurement of the cosmic…
Supersymmetry, or SUSY, has gained popularity as a way to explain some of the inconsistencies in the traditional theory of subatomic physics known as the Standard Model. The new observation, reported at the Hadron Collider Physics conference in Kyoto, is not consistent with many of the most likely models of SUSY. Prof Chris Parke, who…