Nasa unveils quiet supersonic aircraft in effort to revive commercial flights (www.theguardian.com)
cross-posted from: lemmy.world/post/10656840...
Magazyn ze zdalnego serwera może być niekompletny. Zobacz więcej na oryginalnej instancji.
cross-posted from: lemmy.world/post/10656840...
apod.nasa.gov/apod/ap221031.html
Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at...
I was about 30 years old when I talked to my mother about some program on TV about astronomy when she mentioned that our sun is a star. It's like all the other stars we see during the night, it's just closer to us so it appears bigger. My mind was blown. I didn't understand how I could have lived for 30 years and never thought...
I still can’t believe how this one comes back again and again. One of the greatest feat of humanity.
Our Universe appears to be expanding and cooling, having originated some 13.8 billion years ago in a hot Big Bang. However, it’s plausible that what we see from inside our Universe is simply the result of being inside a black hole that formed from some parent Universe. If the black holes that form in our cosmos give birth to...