Knowtex

Astronomy | Cassini | Astronomical imaging is an interesting process. The most common question I get when I show a picture is, "Is this what it would look like if you were actua

It’s funny what a difference a little resolution makes. For example, if you look at this photo of the Moon, you’d probably agree it’s very well done and very pretty.

Yesterday, I linked to a picture taken a few days ago by Alan Friedman that showed the sunspots that are currently blowing their lids with flares. He just sent me a new shot, taken yesterday, and… well. It’s stunning. Presenting the sunspot cluster Active Region 1302.

Astronomy | autumnal equinox | At 09:05 UTC (05:05 Eastern US time) this morning, the position of the center of the Sun's disk, moving south, crossed the celestial equator on the sky. For nor

Astronaut Ron Garan has shared some amazing photography from the International Space Station before. Now he's snapped the southern lights from his privileged position on the ISS.

Astronomy | Alan Friedman | Observing Saturn through even a small telescope is amazing. The rings are so obvious and clear that sometimes, when I would show people the planet through my ow

Say hello to NASA's Space Launch System (SLS) — it's about to become the largest, most powerful space rocket we've ever built.

Mmmmmmm, delicious context. When the news says "massive," this is what they mean. Thanks to Scott Stevenson for making this and sending it my way!

Most cosmic phenomena are so far away that we can't see their movement or evolution over the course of a human lifetime. Every once in awhile, when conditions are just right, we get lucky. This is one of those times.

That picture, by Chris Kotsiopoulos, is clearly a once-in-a-lifetime shot. He took it from Ikaria, a Greek island in the Aegean Sea.