Astronomers searching for habitable worlds might do best to look for rocky planets several times larger than Earth. That’s because, according to a new study, our planet is at the lower end of the size range needed for plate tectonicsâ€”which scientists believe are vital for stabilizing temperatures enough for life.
A new 11-year cycle of heightened solar activity, bringing with it increased risks for power grids, critical military, civilian and airline communications, GPS signals and even cell phones and ATM transactions, showed signs it was on its way late yesterday when the cycleâ€™s first sunspot appeared in the sunâ€™s Northern Hemisphere, said NOAA.
For the first time, scientists have proof two supermassive black holes exist together in the same galaxy, thanks to data from NASA’s Chandra X-ray Observatory. These black holes are orbiting each other and will merge several hundred million years from now, to create an even larger black hole resulting in a catastrophic event that will unleash intense radiation and gravitational waves.
GalaxyZoo is a project which harnesses the power of the internet – and your brain – to classify a million galaxies. By taking part, you’ll not only be contributing to scientific research, but you’ll view parts of the Universe that literally no-one has ever seen before and get a sense of the glorious diversity of galaxies that pepper the sky.