Build The Spirit Radio That Creeped Out Tesla Himself
Tesla's Spirit Radio uses a simple crystal radio circuit connected to a computer sound-in jack to generate spooky sounds from all kinds of electromagnetic sources"My first observations positively terrified me as there was present in them something mysterious, not to say supernatural, and I was alone in my laboratory at night." - Nikola Tesla 1901
Hubble Views the Whirling Disk, image from the NASA/ESA Hubble Space Telescope. It is one of the brightest lenticular galaxies known, a category that lies somewhere between spirals and ellipticals. It has hosted two known supernova explosions and is known to have a colossal supermassive black hole at its center that has the mass of 450 million suns. Virgo cluster of galaxies.
Alien Worlds Explained: From Rogue Planets to Super-Earths [INFOGRAPHIC]
Scientists have only searched through a tiny fraction of our galaxy, and with the fast advances in technology, we can expect many more interesting discoveries in the future. But for now, check out the handy infographic below, courtesy of Space.com, displaying all known types of alien worlds.