Quasars: How to Power a Supermassive Black Hole – Big Think
[ad_1] Quasars: How to Power a Supermassive Black HoleGreat reflection [ad_2] Source link
Science
Man invented ballpoint pen to write upside down, NASA took him to space
[ad_1] Man invented ballpoint pen to write upside down, NASA took him to spaceself-evolution Space pens, pencils and myth debunk: how NASA takes notes in spaceSciTechDaily An A-Z of everything you need to know about the space race, from astronauts to weightlessnesslejournal.fr Dust to dust and moon dust to oxygen – We go to space … Read more
Female hummingbirds dressed in male plumage are less harassed
[ad_1] This is what a male white-necked Jacobean hummingbird looks like, but some adult females also sport the same feathery appearance. Brian Sullivan / Macaulay Library at the Cornell Lab of Ornithology Hummingbirds are renowned for their fast flights, vivid colors, and constant need for food to support their high-energy activities. Male white-necked Jacobean hummingbirds … Read more
Can we recreate dinosaurs from their DNA?
[ad_1] Can we recreate dinosaurs from their DNA? A paleontologist answers the question. Image via Deb Dowd / Unsplash. By William Ausich, Ohio State University Would it really be possible to get DNA from dinosaurs and then recreate them? – Lucie R., 5, Atlanta, Georgia As a paleontologist – he’s a scientist who studies ancient … Read more
NASA’s Smallsat Mars Mission Passes Exam
[ad_1] WASHINGTON – A small mission to Mars that had to revise plans after losing its initial flight has gained NASA approval to move into full-scale development. NASA announced on August 20 that the Escape and Plasma Acceleration and Dynamics Explorers (EscaPADE) had successfully passed an agency exam called Key Decision Point C, allowing it … Read more
Volcanoes could be responsible for the first breaths of oxygen on Earth
[ad_1] Most life needs oxygen to thrive, and science shows that O2 began to appear in the Earth’s atmosphere in significant quantities some 2.4 billion years ago. However, there was also a small injection of oxygen around 100 million years earlier than that – and the origin of this earlier breathing has so far been … Read more
SpaceX launches ants, avocados and a robot towards the space station
[ad_1] This long-exposure photo shows the launch of a SpaceX Falcon 9 rocket during a NASA refueling mission to the International Space Station from Pad 39A at the Kennedy Space Center, as seen from Merritt Island, Fla., On Sunday. (Malcolm Denemark, Florida today via AP) CAPE CANAVERAL, Fla .– A SpaceX shipment of ants, avocados … Read more
How NASA takes notes in space
[ad_1] NASA astronaut Walter Cunningham writes with a Fisher Space Pen during the Apollo 7 flight, the first crewed Apollo flight, and the Space Pen’s first trip to space. The pens have been used on every NASA manned space flight mission since. Credit: NASA The Space Pen has captured the American imagination in more ways … Read more
NASA’s SpaceX Cargo Dragon launch to space station has been cleaned up
[ad_1] Through Nasa August 28, 2021 A SpaceX Falcon 9 rocket, with the company’s unmanned Dragon spacecraft on top, is elevated into an upright position at NASA’s Kennedy Space Center Launch Complex 39A on August 25, 2021, in preparation for the 23rd Refueling Services launch commercial to the International Space Station. The mission will provide … Read more
Female hummingbirds that look like males avoid harassment and have more time to eat
[ad_1] Researchers have found that for females of one species of hummingbird, one major benefit of looking more like males is that they are left alone. In young white-necked Jacobins, a relatively large hummingbird that extends from southern Mexico to parts of South America, young males and females have bright blue feathers on their heads. … Read more