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How do we know that the speed of light is constant? This may seem like a simple question. We measure the distance between a light source and a...

I've been listening to a a lot of Stellardrone recently and it made me realise two things: first, no one seems to care about space ambient anymore...

(If you have to make a joke, please go to "I'm so old that..." in Fun & Games.) So, how did we do it before the internet? Let's document it here....

Alien Hunters Discover Mysterious Signal from Proxima Centauri...

82, complications from Covid-19. (She played MaryAnn on "Gilligan's Island," in case anyone doesn't recognize the name. If you don't recognize the...

We are almost at year end and the 1st space I have seen is out. ...

What is the term for this memory glitch? There is a Bar and Grill across the street from me. It’s name has two words. Each word has four letters,...

Hi All, I'm trying to figure out where my best chance for the April 2024 eclipse viewing experience is here in the US. I live in the northeast...

The Emerging Space Economy - drivers of demand, sources of supply… and innovation. The future looks bright for space exploration. Yet the pace,...

I seal up a puff of tobacco smoke in an airtight box and leave it alone. Does the smoke settle out like hyperfine dust? Does it stay in suspension...

As I understand it, an effective nuclear thermal propulsion engine for a large spacecraft has to run very hot, potentially so hot it would...

No launch has taken place yet this year but we should be watching not a country but a company. SpaceX. They have stated they will have at least 50...

Not that I particularly felt the need to mark such an anniversary, but it does kinda mark the beginning of this whole community. So... Happy......

I finally got around to a little project I promised myself after seeing The Origin Of The Elements on APOD. With a table of the atomic composition of...

Eastern Caribbean issues rare alerts for rumbling volcanoes. Volcanoes that have been quiet for decades are rumbling to life in the eastern...

I write a blog on Dungeons and Dragons. This game uses a variety of dice to generate numbers. I am trying to think my way through a posting about...

The forum seems to keep slowing down sporadically. It was worse an hour ago; I had to wait about 5 minutes to get on the site, lightening up now, but...

Study of nebula IRAS 00500+6713 suggests its central star is unlike any seen before. QUOTE: ...The researchers were studying the nebula IRAS...

I am reading about gems in books I got for Xmas. One mentioned that kimberlite eruptions happened in the Cretaceous Period but fortunately none in...

All the USA space exploration missions to look forward to in 2021. ...

Anyone ever make a movie of what a supernova would look like? I'm thinking that, even if it is spherically symmetric (a big iff right there), it...

NASA: You're about to get a rare chance to spot elusive planet Uranus. Uranus is usually faint, but the moon and Mars will help guide your eyes on...

I think many of us took special pleasure in the clock ticking over to 2021. The year-that-shall-not-be-named made us pay too highly to see it...

Snake and eggs for breakfast? Florida may soon encourage eating invasive pythons. ...

A new study shows that not even cosmology can verify Einstein's assumption about the speed of light. The post There's no way to Measure the Speed of...

James Gunn was an SF author, critic, and academic who was the director of the KU Gunn Center for the Study of Science Fiction. Prof Gunn was one...

Chemical & Engineering News Maybe the most interesting part is this: Link to journal paper Abstract:

Navigating and mapping rivers has long been a central component in human exploration.* Whether it was Powell exploring the Colorado’s canyons or...