保护地球，探索宇宙，发现文明
Flag Day is celebrated on June 14 each year and commemorates the adoption of the flag of the United States on June 14, 1777, by the Second Continental Congress. NASA flies the U.S. flag on its missions throughout our solar system. In this iconic image from the Apollo 11 lunar landing, Commander Neil Armstrong snapped this picture of Buzz Aldrin saluting the ...
2022年6月14日 Satellites Behind Pinnacles Image Credit & Copyright: Joshua Rozells Explanation: What are all those streaks across the background? Satellite trails. First, the foreground features picturesque rock mounds known as Pinnacles. Found in the Nambung National Park in Western Australia, these human-sized spires are made by unknown processes from an...
Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide speaks with students during a visit to Arlington Science Focus Elementary School, Friday, June 10, 2022, in Arlington, Virginia. Hoshide and his crewmates from NASA’s SpaceX Crew-2 completed the agency’s second long-duration commercial crew mission to the International Space Station in Novem...
2022年6月13日 M51: The Whirlpool Galaxy from Hubble Image Credit: NASA, ESA, Hubble, HLA; Processing & Copyright: Bernard Miller Explanation: The Whirlpool Galaxy is a classic spiral galaxy. At only 30 million light years distant and fully 60 thousand light years across, M51, also known as NGC 5194, is one of the brightest and most picturesque galaxies on ...
2022年6月12日 Find the Man in the Moon Image Credit & Copyright: Dani Caxete Explanation: Have you ever seen the Man in the Moon? This common question plays on the ability of humans to see pareidolia — imagining familiar icons where they don’t actually exist. The textured surface of Earth’s full Moon is home to numerous identifications of...
2022年6月11日 The Road and the Milky Way Image Credit & Copyright: David Cruz Explanation: At night you can follow this road as it passes through the Dark Sky Alqueva reserve not too far from Alentejo, Portugal. Or you could stop, look up, and follow the Milky Way through the sky. Both stretch from horizon to horizon in this 180 degree panorama recorded on...
Like Sherlock Holmes’s magnifying glass, the NASA/ESA Hubble Space Telescope can peer into an astronomical mystery in search of clues. The enigma in question concerns the globular cluster Ruprecht 106, pictured here. Unlike most globular clusters, Ruprecht 106 may be what astronomers call a single population globular cluster. While the majority of stars in a...
There is a deep connection between some of the largest, most energetic events in the universe and much smaller, weaker ones powered by our own Sun. The results come from a long observation with NASA’s Chandra X-ray Observatory of Abell 2146, a pair of colliding galaxy clusters located about 2.8 billion light years from Earth. Galaxy clusters contain hu...
2022年6月10日 Arp 286: Trio in Virgo Image Credit & Copyright: Nicolas Rolland, Telescope.Live Explanation: This colorful telescopic field of view features a trio of interacting galaxies almost 90 million light-years away, toward the constellation Virgo. On the right two spiky, foreground Milky Way stars echo the extragalactic hues, a reminder that stars i...
2022年6月9日 Cosmic Clouds in Cygnus Image Credit & Copyright: Wolfgang Zimmermann Explanation: These cosmic clouds of gas and dust drift through rich star fields along the plane of our Milky Way Galaxy toward the high flying constellation Cygnus. They’re too faint to be seen with the unaided eye though, even on a clear, dark night. Image data from a...