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On May 26, 1983, the European Space Agency launched its first X-ray Observatory into space. <br/><br/>The spacecraft was called EXOSAT, which stands for European X-ray Observatory SATellite. The mission was entirely devoted to studying the universe by looking exclusively at X-ray radiation. Human eyes aren't capable of seeing light in X-ray wavelengths. By looking for X-rays using satellites and telescopes, astronomers can locate and study high-energy sources of radiation. This includes supernovas, active galactic nuclei, galaxy clusters, black holes, neutron stars, white dwarfs, and binary stars. EXOSAT launched on a Thor-Delta rocket from Vandenberg Air Force Base in California. It was put in a highly eccentric elliptical orbit that took it around the Earth once every 90 hours. It made several big discoveries during its three years in orbit. Its most famous discovery was something called quasi-periodic oscillation in X-ray binary stars. In other words, the X-ray light coming from those stars flickers periodically with very high precision like a ticking clock. The EXOSAT mission ended when the satellite deorbited and burned up in the atmosphere, but scientists are still analyzing the data and learning new things from it.
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Centers for Disease Control and Prevention (CDC)
⏲ 2 minutes 27 seconds 👁 247K
TED-Ed
⏲ 5 minutes 21 seconds 👁 1.2M
During remarks on the Senate floor, Sen. Josh Hawley (R-MO) and Sen. Ben Ray Lujan (D-NM) debated Sen. Mike Lee (R-UT) over a bill that would provide compensation to those affected by the Federal Government's nuclear weapons testing.<br/><br/>Fuel your success with Forbes. Gain unlimited access to premium journalism, including breaking news, groundbreaking in-depth reported stories, daily digests and more. Plus, members get a front-row seat at members-only events with leading thinkers and doers, access to premium video that can help you get ahead, an ad-light experience, early access to select products including NFT drops and more:<br/><br/>https://account.forbes.com/membership/?utm_source=youtube&utm_medium=display&utm_campaign=growth_non-sub_paid_subscribe_ytdescript<br/><br/><br/>Stay Connected<br/>Forbes on Facebook: http://fb.com/forbes<br/>Forbes Video on Twitter: http://www.twitter.com/forbes<br/>Forbes Video on Instagram: http://instagram.com/forbes<br/>More From Forbes:http://forbes.com
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UPMC
⏲ 2 minutes 34 seconds 👁 442.5K
Nucleus Medical Media
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Research Suggests Sunbathing , Could Impact Your Microbiome.<br/>'Newsweek' reports that research shows that in addition to increasing cancer risks and accelerating aging, <br/>exposure to the sun can also disrupt the skin's microbiome.<br/>Researchers from the University of Manchester found that <br/>a week-long vacation's worth of sun could significantly <br/>impact the skin's delicate balance of microbes.<br/>Skin is colonized by a diverse microbiota <br/>that play essential roles in the maintenance <br/>of skin homeostasis [balance], protecting <br/>skin against invading pathogens and <br/>coordinating the innate and adaptive <br/>arms of the cutaneous immune system, Abigail Langton, Lead author of the study, via 'Newsweek'.<br/>The study, which was published in the journal <br/>'Frontiers in Aging,' looked at the skin microbiomes of <br/>21 volunteers before and after they went to the beach.<br/>'Newsweek' reports that volunteers were split into three <br/>groups: those who were already tan, those who tanned while on vacation and those who avoided the sun. .<br/>The group that tanned while on vacation <br/>were found to have lower levels of \
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Seeker
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Alberta Health Services
⏲ 5 minutes 14 seconds 👁 518.5K
On May 21, 2010, Japan launched the first solar sail into space. <br/><br/>Solar sail technology uses light for spacecraft propulsion, but not in the same way that traditional solar panels do. While solar panels use light to generate electricity, spacecraft with solar sails rely only on the light itself to cruise through outer space. Particles of light called photons actually push the spacecraft forward. A single photon can’t accomplish this on its own, but with enough photons striking a spacecraft, propulsion is possible—you just need a big surface to catch all that light. Scientists have been toying with this idea since the 1800s, but Japan finally proved that it was possible when the country launched the Ikaros mission. The mission’s name stands for Interplanetary Kite-craft Accelerated by Radiation of the Sun. This experimental spacecraft had a 2,100-square foot sail that looked like a giantspace kite. Japan’s space agency was also able to steer the spacecraft by controlling the orientation of liquid crystals in LCD panels that were built into the solar sail. Ikaros sailed all the way to Venus in just six months before continuing on its orbit around the sun.
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SciShow
⏲ 6 minutes 6 seconds 👁 153.6K
Science Animated
⏲ 2 minutes 13 seconds 👁 32.9K
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