保护地球，探索宇宙，发现文明
This new image from NASA’s Hubble Space Telescope shows interacting galaxies known as AM 1214-255. These galaxies contain active galactic nuclei, or AGNs. An AGN is an extraordinarily luminous central region of a galaxy. Its extreme brightness is caused by matter whirling into a supermassive black hole at the galaxy’s heart. Hubble observed the galaxy closes...
Two neutron stars begin to merge in this illustration, blasting a jet of high-speed particles and producing a cloud of debris. These gamma-ray bursts (GRBs) are the most powerful events in the universe. Scientists think these kinds of events are factories for a significant portion of the universe’s heavy elements, including gold. They based their estimates o...
“I think that getting to be a crewmember on the International Space Station, and getting to serve there over the course of two long-duration stays, we really feel like we are bridge-builders. “We are actively building the bridge to the Moon and then on to Mars. We, and the science that we do and the operations we conduct, are bringing together th...
5月份的天空会发生什么？月球与行星的合影，我们到达了“金星的顶峰”，以及南半球的天空有什么不同呢？
2023年5月3日 Centaurus A: A Peculiar Island of Stars Image Credit & Copyright: Marco Lorenzi, Angus Lau & Tommy Tse; Text: Natalia Lewandowska (SUNY Oswego) Explanation: Galaxies are fascinating. In galaxies, gravity alone holds together massive collections of stars, dust, interstellar gas, stellar remnants and dark matter. Pictured is NGC 5128, bette...
2023年5月2日 Flat Rock Hills on Mars Image Credit & Copyright: NASA, JPL-Caltech, MSSS; Processing: Neville Thompson Explanation: Why are there so many flat rocks on Mars? Some views of plains and hills on Mars show many rocks that are unusually flat when compared to rocks on Earth. One reason for this is a process that is common to both Mars and Earth: er...
2023年5月1日 Carina Nebula North Image Credit & Copyright: Carlos Taylor Explanation: The Great Carina Nebula is home to strange stars and iconic nebulas. Named for its home constellation, the huge star-forming region is larger and brighter than the Great Orion Nebula but less well known because it is so far south — and because so much of humanity li...