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Universe Today - Space and astronomy newsSpace and astronomy news Skip to content Universe Today Space and astronomy news Scroll down to content Posts Posted on January 12, 2021January 12, 2021With its New Extension, Juno is Going to be Visiting Jupiter’s Moons The Juno mission to Jupiter has been extended to September 2025 – or however long the spacecraft can keep operating around Jupiter. While Juno has so far focused its attention on the giant planet alone, the mission extension will include observations of Jupiter’s rings and large moons, with targeted observations and close flybys planned of the moons Ganymede, Europa, and Io. This will be the first close flybys of these moons since the Galileo mission in 1995-2003. Continue reading “With its New Extension, Juno is Going to be Visiting Jupiter’s Moons” Posted on January 12, 2021January 12, 2021A Robot Made of Ice Could Adapt and Repair Itself on Other Worlds Some of the most tantalizing targets in space exploration are frozen ice worlds. Take Jupiter’s moon Europa for instance. Its warm salty subsurface ocean is buried under a moon-wide sheet of ice. What’s the best way to explore it? Maybe an ice robot could play a role. Continue reading “A Robot Made of Ice Could Adapt and Repair Itself on Other Worlds” Posted on January 11, 2021January 11, 2021Astronomers see Swirling Weather on the Closest Brown Dwarf Brown dwarfs are the weird not-planets but not-stars in the universe, and astronomers have wondered for decades if their atmospheres are striped like Jupiter’s, or splotchy like the sun’s. A team of astronomers based at the University of Arizona used NASA’s TESS Observatory to find the answer: if you saw a brown dwarf for yourself, it would look more like a giant planet than a star. Continue reading “Astronomers see Swirling Weather on the Closest Brown Dwarf” Posted on January 11, 2021January 11, 2021The Mystery of Sunquakes is Deep; One Million Meters Deep! The Sun, as it turns out, is a pretty big deal. The thermonuclear behemoth at the center of the solar system makes up well over 99% of all the mass in the solar system. Despite being the most well-studied star in the universe, there are still many mysteries about its works.  One of the Sun’s mysteries is the nature of sunquakes, massive ripples traveling thousands of kilometers across the sun’s surface. Occasionally, when a solar flare erupts, so-called seismic transients can be seen rippling through the solar surface over the next hour. The energy source driving these ripples was thought to be either the transient heating of the solar atmosphere during the flare event or by the powerful flexing of magnetic flux applied directly to the photosphere(the sun’s visible surface) itself, also originating in the flare event above. Using data from the Solar Dynamics Observatory (SDO), scientists have published a paper in the Astrophysical Journal of Letters that, for the first time, describes submerged sources of transient acoustic emission (sunquakes). The source of these mysterious waves seems to be, as it turns out, a thousand kilometers deep below, in the churning, seething hot interior of the star. Continue reading “The Mystery of Sunquakes is Deep; One Million Meters Deep!” Posted on January 11, 2021January 11, 2021SpaceX’s Next Idea: to Catch Super Heavy Boosters With the Launch Tower SpaceX is getting closer and closer to realizing the design for its Starship and Super Heavy launch system. Once complete, it will be the world’s first fully-reusable launch system and will facilitate trips to Low Earth Orbit (LEO), the Moon, and Mars. Construction began on the system’s booster element (Super Heavy) this past summer and, according to a recent tweet by Musk, will be “caught” by its launch tower. Continue reading “SpaceX’s Next Idea: to Catch Super Heavy Boosters With the Launch Tower” Posted on January 11, 2021January 11, 2021This is the Fireworks Galaxy. It’s had ten Supernovae in the Last Century Alone Say hello to NGC 6946, otherwise known as the Fireworks Galaxy. This little galaxy is the most prolific producer of supernovae in the known universe, popping off those incredible explosions roughly once a decade. It’s secret? An incredibly high rate of star formation. Continue reading “This is the Fireworks Galaxy. It’s had ten Supernovae in the Last Century Alone” Posted on January 10, 2021January 10, 2021There's no way to Measure the Speed of Light in a Single Direction Special relativity is one of the most strongly validated theories humanity has ever devised. It is central to everything from space travel and GPS to our electrical power grid. Central to relativity is the fact that the speed of light in a vacuum is an absolute constant. The problem is, that fact has never been proven. Continue reading “There's no way to Measure the Speed of Light in a Single Direction” Posted on January 9, 2021January 9, 2021SpaceX Releases a Recap Video of their SN8 Making its Hop Test! To commemorate their greatest accomplishment to date with the Starship, SpaceX has released a recap video of the SN8 high-altitude flight. This was the 12.5 km hop test that took place on December 9th, 2020, which saw the SN8 prototype ascend to an altitude of 12.5 km (7.8 mi), conduct a “belly-flop” maneuver, and return to the launch pad. While it didn’t quite stick the landing, the test was a major milestone in the development of the Starship. Continue reading “SpaceX Releases a Recap Video of their SN8 Making its Hop Test!” Posted on January 9, 2021January 9, 2021Winning Urban Farming Ideas for Mars! If humans plan to go to live and work beyond Earth someday, they will need technologies that allow for sustainable living in alien environments. This is especially true of Mars, which is extremely cold, dry, and subject to more radiation than we are used to. On top of that, it also takes six to nine months to send spacecraft there, and that’s every two years when Earth and Mars are closest to each other in their orbits. As such, settling on the Red Planet will require some serious creativity! This the purpose of Mars City Design (the Mars City®), an innovation and design platform founded by architect and filmmaker Vera Mulyani. Every year since its inception, this organization has hosted the Mars City Design Challenges, where students from around the world come together with industry experts to produce architectural designs for living on Mars (what Mulyani calls “Marchitecture”). Continue reading “Winning Urban Farming Ideas for Mars!” Posted on January 8, 2021January 8, 2021These Bizarre Cloud Patterns are von Kármán’s Vortices, Caused by the air Wrapping Around Tall Islands This is an image of some of the islands that make up the nation of Cape Verde. While most in that group of ten islands are flat, some are very tall: Fogo, Santa Antão, and São Nicolau. Those three stand well above their compatriots, with Fogo reaching an altitude of 2,829 metres (9,281 feet). The three tall volcanic islands sometimes interact with the wind to create von Kármán vortices, also called von Kármán vortex streets. Continue reading “These Bizarre Cloud Patterns are von Kármán’s Vortices, Caused by the air Wrapping Around Tall Islands” Posts navigation Page 1 Page 2 … Page 2,302 Next page Join our 836 patrons! See no ads on this site, see our videos early, special bonus material, and much more. Join us at patreon.com/universetoday Get our new book! Search for: Search Home Members Guide to Space Carnival Photos Videos Forum Contact Privacy Follow Us Twitter Instagram YouTube Facebook RSS Feed Twitch This work is licensed under a Creative Commons Attribution 4.0 International License. Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use. To find out more, including how to control cookies, see here: Cookie Policy Privacy Policy Proudly powered by WordPress Universe TodayUniverse TodayAn artist's conception of a brown dwarf. A new study identifies CK Vulpeculae as the remnant of a collison between a brown dwarf and a white dwarf. Image: By NASA/JPL-Caltech (http://planetquest.jpl.nasa.gov/image/114) [Public domain], via Wikimedia CommonsLead Image: Side-by-side of M-Class solar flare in visible and ultraviolet light. The ‘IP’ in the timeline indicates ‘impulsive flare’, and the following ripples can be seen radiating in the ultraviolet for up to 42 minutes following. Credit: NASA/SDOMember Log inJoin our Patreon communityCreative Commons License

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服务器信息协议类型 HTTP/1.1 200 OK 页面类型 text/html; charset=UTF-8 服务器类型 cloudflare 程序支持连接标识消息发送 2019年10月16日 16时59分42秒 GZIP检测已启用GZIP压缩源文件大小 136.97KB 压缩后大小 45.89KB 压缩率 66.50% 最后修改时间未知