Where the heck is Eris, anyway? Here is a great illustration that shows the relative sizes of everything from the Sun down to Nereid, the 211-mile-wide moon of Neptune. Notice how many things are bigger than Pluto which, in this context, probably doesn’t deserve to be called a real planet after all.
Here’s a photo of the sun, taken by the Super-Kamiokande observatory in Japan. A very unusual photo, not by natural light, infrared or ultraviolet. By neutrino emissions. What’s more, it was taken at night. How do you take a photo of the sun at night? Through the Earth…
This has gotten a lot of attention in media that we nerds pay attention to, but not much elsewhere. Last week something blew up deep in space. If you’d been looking up at the sky at that time, you’d have set several records. You’d have seen the furthest naked-eye-visible object. Seven and a half billion […]