I was invited to the SETI Institute in Mountain View to give a public talk about my research last week. It's all about how the largest structures in the Universe influence the evolution of the galaxies that reside in them. The actual talk begins about 10 ... Enlarge this image Scientists in Michigan have found a new dwarf planet in our solar system. It's about 330 miles across and some 8.5 billion miles from the sun. It takes 1,100 years to complete one orbit. But one of the most interesting things about the ... What evidence do we have that any of this is real? Crescent #Europa from @NASAVoyager Voyager 2 with part of the night side illuminated by light reflected by #Jupiter The leaders of Astronomy thought you might also enjoy participating in Physics, so they've made it a part of their community neighborhood! Check out the rest of Astronomy community's neighborhood here. The leaders of Astronomy thought you might also enjoy participating in Physics, so they've made it a part of their community neighborhood! Check out the rest of Astronomy community's neighborhood here. This is pretty great news, but at the risk of raining on everyone's parade... it's important to remember that while this planet is in the habitable zone of Proxima Centauri, Proxima Centauri itself is a very inhospitable star that is prone to flaring ofte... My family and I want to get into astronomy as a hobby, but for us the limitation isn't the cost, it is one of portability. Whatever telescope and mount we purchase has to be light enough to be carried up and down a flight of stairs, then transported by c... NGC 7635: Bubble Nebula, photo courtesy of NASA, ESA, Hubble Heritage Team.