保护地球，探索宇宙，发现文明
Vance I. Oyama holds a readout from the gas chromatograph in the life detection laboratory at NASA’s Ames Research Center in this picture from April 22, 1965. Oyama had a long career at NASA, during which he served as Life Detection Systems branch chief; he examined lunar soil samples and also helped design experiments for the Viking Mars Landers. Both he an...
NASA astronaut Stephen Bowen and United Arab Emirates astronaut Sultan Alneyadi (partially obscured) are pictured in their spacesuits, exiting the International Space Station’s Quest airlock and beginning a spacewalk on April 28, 2023. The duo spent seven hours and one minute in the vacuum of space routing cables and installing insulation, readying the...
Popocatépetl, one of Mexico’s most active volcanoes, has been erupting since 2005. On April 14, 2023, when this image was acquired by Landsat 8, monitoring systems detected water vapor, volcanic gases, and ash coming from the volcano. Plumes rose as high as 4.5 miles (7.3 kilometers). Learn more about Popocatépetl. Image Credit: NASA/Lauren Dauphin; USGS 波波卡...
Curtis Flack (left) and Paul von Hardenberg inspect the ice formation on the spinner of an Advanced Air Mobility proprotor model tested in the Icing Research Tunnel at NASA’s Glenn Research Center in Cleveland. Data from the test will be used by icing researchers to better understand the risks of icing on electric vertical takeoff and landing vehicles, assis...
Miloslav Stašek, Ambassador of the Czech Republic to the United States (left), Foreign Affairs Minister for the Czech Republic, Jan Lipavský (second from left), NASA Administrator Bill Nelson (second from right), and Acting Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs Jennifer R. Littlejohn (right), are seen ...
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...
A menagerie of interesting astronomical finds are visible in this image from the NASA/ESA Hubble Space Telescope. In addition to several large elliptical galaxies, a ring-shaped galaxy is lurking on the right of the image. A pair of bright stars are also visible at the left of the image, notable for their colorful crisscrossing diffraction spikes. This colle...
图为国际空间站在西班牙马略卡岛附近的地中海上空262英里处绕轨道飞行时，诺斯罗普·格鲁曼公司的天鹅座太空货运飞船从加拿大手臂2号机械臂上释放后的瞬间。