DnD 2024 backgrounds grant characters stat increases, a starting feat, a range of proficiencies, and a clear backstory. This is a major shake-up to the original Dungeons and Dragons 5e rules, and it ...

This course examines the history of our universe from the Big Bang, through the formation of the cosmic microwave background, to the universe we see today, with all its large scale structures. To be ...

recombination and the formation of cosmic microwave background radiation. describe how quantum fluctuations during inflation are the source of density fluctuations and gravitational waves. Students ...

Using the Hubble Space Telescope (HST), astronomers from the University of California Santa Cruz (UCSC) and elsewhere have observed an ultra-diffuse galaxy known as FCC 224. Results of the ...

Choose from a wide selection of royalty-free backgrounds from retro to abstract, seasonal to popular, and desktop to everything else. You're sure to find the perfect background to bring out the blue ...