In the historic creativeness, astronomers look by telescopes, and photonic knowledge pours in on the pace of sunshine. Taking what they will get, they passively obtain data about far-off stars and planets. These objects are fastened, and their circumstances can’t be tweaked. But that’s not how all astronomy works. Planetary and exoplanetary scientists, as an … Read more
There are just a few instances within the historical past of a species when it positive aspects the know-how, the audacity and the instruments to drastically advance the interrogation of its origins. Humanity is at such a second, astronomers say. According to the story that they’ve been telling themselves (and the remainder of us) for … Read more
First it punched an asteroid. Now, a NASA spacecraft’s rampage could proceed, and it could blast a gap in one other house rock. The Osiris-Rex spacecraft is on its method again to Earth, having thwacked — briefly — the floor of an asteroid known as Bennu final 12 months to scoop up samples. It will … Read more
Arctic. Atlantic. Long in the past, the 2 oceans existed in concord, with heat and salty Atlantic waters gently flowing into the Arctic. The layered nature of the Arctic — sea ice on prime, cool freshwater within the center, and heat, salty water on the backside — helped maintain the boundary between the polar ocean … Read more