rays

Galaxies Far, Far Away Send Us Highest-Energy Cosmic Rays

发表于 2017-09-22 rays galaxies cosmic

A new study hints that the most energetic particles ever seen come from far beyond the Milky Way. Learn more about your ad choices. Visit megaphone.fm/adchoices

Date of the Vikings' First Atlantic Crossing Revealed by Rays from Space

发表于 2021-10-26 1021 vikings rays

By dating the remnants of trees felled in Newfoundland, scientists have determined that the Norse people likely first set foot in the Americas in the year A.D. …

Birch Trees Droop at Night with No Rays in Sight

发表于 2016-09-21 droop birch rays

The branches of birch trees in Europe sagged by as much as four inches at night compared with daytime. Learn more about your ad choices. Visit megaphone.fm/adch…

UV Rays Strip Small Galaxies of Star Stuff

发表于 2017-03-23 uv rays galaxies

Researchers measured the intensity of the universe's ultraviolet background radiation, and say it may be strong enough to strip small galaxies of star-forming g…

Cosmic Rays with Dr Jessica Bloom

发表于 2020-06-21 karl rays ages

They're Cosmic ... but are they Rays ? Dr Karl gets the briefing from a recent University of Sydney astrophysics graduate, Dr Jessica Bloom. Cosmic Rays were fo…