Search For Habitable Alpha Centauri Planets Gets Boost with New Instrument
A coronagraph has been installed on the European Southern Observatory’s Very Large Telescope to search for planets around nearby star Alpha Centauri. -- The Search for Habitable Alien Worlds in Earth's Backyard Heats Up: https://www.space.com/alien-planets-alpha-centauri-breakthrough-watch.html Credit: Breakthrough Watch / ESO The Search for Habitable Alien Worlds in Earth's Backyard Heats Up: https://www.space.com/alien-planets-alpha-centauri-breakthrough-watch.html
SHSSP19 - Interstellar Program Alpha Centauri
Guest Speaker: Dr Simon Peter "Pete" Worden Can we reach the stars?
No extraterrestrials have yet visited us – but neither have we stepped out onto the galactic stage. Are we destined to belong to Earth for as long as we survive? Or can we reach the stars? Breakthrough Starshot is a $100 million research and engineering program aiming to lay the foundations for a flyby mission to Alpha Centauri, our nearest star system, within a generation. This is one of several privately-funded global initiatives to answer the fundamental science questions surrounding the origin, extent and nature of life in the universe. The Breakthrough Initiatives are managed by the Breakthrough Prize Foundation.
Project Dragonfly. A Laser-Powered Probe to Alpha Centauri
The distances between stars are so vast, it’s hard to wrap your mind around it. Even our far flung Voyagers have barely reached interstellar space, and would take tens of thousands of years to get to even the nearest star. But scientists and engineers are considering what it would actually take to send a spacecraft to another star. It’s called Project Dragonfly, and would use existing or near future technologies to send a 3,000 kg spacecraft to Alpha Centauri within 100 years. Project Dragonfly paper
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How Will We Get to Alpha Centauri?
Humans are attempting to achieve interstellar travel. Here’s why some of the world’s greatest minds believe a nanocraft is the best way to journey into deep space. Watch More Space Crafts! | https://bit.ly/2w0YKD1 Read More:
Alpha Centauri: A Triple Star System about 4 Light Years from Earth
“A new study involving long-term monitoring of Alpha Centauri by NASA’s Chandra X-ray Observatory indicates that any planets orbiting the two brightest stars are likely not being pummeled by large amounts of X-ray radiation from their host stars. This is important for the viability of life in the nearest star system outside the Solar System.” Engage Warp Drive! Why Interstellar Travel's Harder Than It Looks
“How hard is it to hop to the nearest star system or soar across the galaxy? A typical "Star Trek" or "Star Wars" movie makes it look easy. When the heroes get a distant distress call, they use "warp drive" or "hyperdrive" and arrive at their destination within minutes or hours. If we got the right propulsion, would it be possible for us to voyage that quickly in real life?” Building Sails for Interstellar Probes Will Be Tough, but Not Impossible
“Giant lasers may indeed launch fleets of spacecraft to Alpha Centauri, given breakthroughs in the science behind extraordinarily thin, incredibly reflective sails that can catch this laser light, a new study finds.” ____________________ Seeker inspires us to see the world through the lens of science and evokes a sense of curiosity, optimism and adventure. Visit the Seeker website http://www.seeker.com/ Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel Seeker on Twitter http://twitter.com/seeker Seeker on Facebook https://www.facebook.com/SeekerMedia/ Space Crafts on Facebook https://www.facebook.com/SeekerSpaceCrafts/ Seeker http://www.seeker.com/
A Tour of Alpha Centauri
In humanity's search for life outside our Solar System, one of the best places to look is Alpha Centauri, a system containing the three nearest stars beyond the Sun. A new study that has involved monitoring of Alpha Centauri for more than a decade by NASA's Chandra X-ray Observatory provides encouraging news about one key aspect of planetary habitability. It indicates that any planets orbiting the two brightest stars in the Alpha Cen system are likely not being pummeled by large amounts of X-ray radiation from their host stars. Alpha Centauri is a triple star system located just over four light years, or about 25 trillion miles, from Earth. While this is a large distance in terrestrial terms, it is three times closer than the next nearest Sun-like star. The stars in the Alpha Centauri system include a pair called "A" and "B," that we'll call AB, which orbit relatively close to each other. Alpha Cen A is a near twin of our Sun in almost every way, including age, while Alpha Cen B is somewhat smaller and dimmer but still quite similar to the Sun. The third member, Alpha Cen C (also known as Proxima), is a much smaller red dwarf star that travels around the AB pair in a much larger orbit that takes it more than 10 thousand times farther from the AB pair than the Earth-Sun distance. Proxima currently holds the title of the nearest star to Earth, although AB is a very close second. The Chandra data reveal that the prospects for life in terms of current X-ray bombardment are actually better around Alpha Cen A than for the Sun, and Alpha Cen B fares only slightly worse. Proxima, on the other hand, is a type of active red dwarf star known to frequently send out dangerous flares of X-ray radiation, and is likely hostile to life.
A Quick Look at Alpha Centauri
At a distance of only 25 trillion miles, the Alpha Centauri star system is a prime target in humanity's search for life outside our Solar System. Astronomers would like to know what kind of environment exists around the two stars in Alpha Centauri that closely resemble our Sun. To learn about this, NASA's Chandra X-ray Observatory has been monitoring the Alpha Centauri system every six months for over a decade. Chandra is the only X-ray observatory capable of resolving the two Sun-like stars to determine which star is doing what. A new study indicates these two stars are likely not pummeling any orbiting planets with large amounts of X-ray radiation. This is promising news for the sustainability of life on any planets astronomers find around these two nearby stars in the future.
Proxima B Update for March 5, 2018
An update in my continuing coverage of the exoplanet Proxima B, currently the closest known exoplanet to earth and hit it's subject to severe solar flares. https://www.patreon.com/johnmichaelgodier Papers and links: https://carnegiescience.edu/news/proxima-centauri%E2%80%99s-no-good-very-bad-day-flare-illuminates-lack-dust-ring-puts-habitability Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
"Proxima B" Hopes For Life Smacked Down
Scientists have discovered a flare off of the sun’s closest stellar neighbor, Proxima Centauri. Many are reporting that it could spell trouble for any hope for life on its exoplanet, Proxima b—but it might also kill off a presumed set of other planets around the star. Last fall, lots of folks, including me, reported on evidence of dust rings around Proxima Centuari. These potential rings would imply that the star could have an elaborate planetary system alongside its confirmed exoplanet, Proxima b.
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Outward Bound: Colonizing Alpha Centauri
A journey out to the stars to colonize Alpha Centauri
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We've looked at colonizing our own solar system, from Mars to Venus, and all the way inward to the Sun itself and out to the dark edges of the Oort Cloud. In this episode we conclude the Outward Bound Series by heading to our nearest neighboring star system, Alpha Centauri, and look at the trials and tribulations of colonizing binary star systems and red dwarves. Visit our Website: http://www.isaacarthur.net
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NASA Looks To Alpha Centauri
NASA hopes to launch an exploratory probe to investigate the system of our nearest neighbor, the star system Alpha Centauri. The plan is to reach the star one hundred years after man set foot on the moon, in 2069.
A report in New Scientist reveals the plans of a group of engineers at NASA’s Jet Propulsion Laboratory in California. The mission concept was presented at the annual conference of the American Geophysical Union. It also promises to use technology that doesn’t exist yet.
The only spacecraft that’s ever left our solar system is Voyager 1. Alpha Centauri is 4.3 light-years away, or about 25 trillion miles to us Earthlings. A spacecraft like Voyager would take nearly 80,000 years to get there.
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Dr. Godfrey's Intro to Astronomy - Nearest Stellar Neighbor
Dust cloud discovered around nearest star - SpaceTime with Stuart Gary S20E87
Stream episodes on demand from www.bitesz.com (mobile friendly) *Dust cloud discovered around nearest star
Astronomers have discovered a dust ring around Proxima Centauri is the closest star to the Sun. A report claims the dust ring’s detection could point to a significant planetary system around the star.
*Why massive galaxies don't dance in crowds
A new study has discovered that the rotational movement of a galaxy in a galactic cluster is determined by its mass rather than galactic density. The findings are based on a detailed study of over than 300 galaxies.
*Introducing the quarksplosion
Scientists have discovered the quarksplosion -- a blast that could be eight times more powerful than any thermonuclear bomb. Physicists have discovered that fusing two sub atomic elementary particles -- known as beauty or bottom quarks -- could result in the creation of a new primary particle, a secondary particle known as a nucleon and the release of huge amounts of energy -- some eight times more -- than a nuclear fusion reaction.
*Powering Enceladus active ocean
Heat from friction could power hydrothermal activity on Saturn's moon Enceladus for billions of years if the moon has a highly porous core. The new findings helps resolve a question scientists have grappled with for a decade: Where does the energy to power the extraordinary geologic activity on Enceladus come from?
*One of the oldest objects in the universe
Astronomers have discovered one of most distant galaxies ever seen dating back some 12.8 billion years. The findings provide new insights into the early history of the universe.
*SpaceX make it 16 in a row
SpaceX has just launched its 16th rocket this year – new record for the California company which has now flown the Falcon 9 more times than any other launch service provider has flown any other rocket. The SpaceX Falcon 9 blasted off from Kennedy Space Centre pad 39A at the Cape Canaveral Air Force Base in Florida carrying the KoreaSat-5A telecommunications satellite into geostationary transfer orbit.
*The Science Report
2017 is on track to be among the hottest years on record.
Why push ups and sit ups could add years to your life.
Warnings that attempted suicide is significantly more common among those who did badly at school.
Why wind farms on mountain ridges could wipe out bat populations.
Paleontologists determine the colour patterns of a dinosaur with a striped tail and raccoon like mask.
Today’s teenagers are have far more positive behavioral traits than when you were a teen.
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Proxima Centauri is the closest star to the Sun. It is a faint red dwarf lying just four light-years away in the southern constellation of Centaurus (The Centaur). It is orbited by the Earth-sized temperate world Proxima b, discovered in 2016 and the closest planet to the Solar System. But there is more to this system than just a single planet. The new ALMA observations reveal emission from clouds of cold cosmic dust surrounding the star. Dust belts are the remains of material that did not form into larger bodies such as planets. The particles of rock and ice in these belts vary in size from the tiniest dust grain, smaller than a millimetre across, up to asteroid-like bodies many kilometres in diameter. Dust appears to lie in a belt that extends a few hundred million kilometres from Proxima Centauri and has a total mass of about one hundredth of the Earth’s mass. This belt is estimated to have a temperature of about –230 degrees Celsius, as cold as that of the Kuiper Belt in the outer Solar System. There are also hints in the ALMA data of another belt of even colder dust about ten times further out. If confirmed, the nature of an outer belt is intriguing, given its very cold environment far from a star that is cooler and fainter than the Sun. Both belts are much further from Proxima Centauri than the planet Proxima b, which orbits at just four million kilometres from its parent star. Proxima Centauri's planetary system is also particularly interesting because there are plans — the Starshot project — for future direct exploration of the system with microprobes attached to laser-driven sails. A knowledge of the dust environment around the star is essential for planning such a mission.
Setting Sail for Alpha Centauri
Alpha Centauri is the closest star system to us at about four light years away but it would take us thousands of years to get there by rocket. Some people just don't have that much patience. ------------------------------------------------------- Subscribe to Fw:Thinking:
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Organic material discovered on Ceres - SpaceTime with Stuart Gary S20E15
Stream Episodes on demand from www.bitesz.com or www.spacetimewithstuartgary.com (both mobile friendly) *Organic material discovered on Ceres
Evidence of organic material has been found on the dwarf planet Ceres.
A report in the journal science claims the detection by NASA’s Dawn spacecraft adds to a growing list of solar system bodies found to contain organic materials which are key building blocks for life as we know it.
*NASA's Europa Flyby Mission Moves into Design Phase
A mission to examine the habitability of Jupiter's ocean-bearing moon Europa is taking one step closer to the launch pad, with the completion of a major NASA review. The Europa mission spacecraft would launch in the 2020's, arriving in the Jupiter system several years later.
*How to stop when we reach Alpha Centauri
Scientists have worked out a way to slowdown and stop once spacecraft finally reach our nearest interstellar neighbour Alpha Centauri. In April last year, Russian physicist and billionaire Yuri Milner together with British scientist Steven Hawking announced the Breakthrough Starshot Initiative to fly a swarm of tiny spacecraft to the Alpha Centauri star system -- 4.37 light years away -- with in our lifetimes.
*Ariane 5’s first launch this year
The first Ariane 5 launch for 2017 has successfully blasted into orbit carrying two new telecommunications satellites. Arianespace flight VA235 launched from the European Space Agency’s Kourou spaceport in French Guiana into cloudy skies.
For Enhanced Show Notes, including photos to accompany this episode: http://www.bitesz.com/spacetime-show-notes Subscribe, rate and review SpaceTime at all good podcasting apps…including iTunes, audioBoom, Stitcher, Pocketcasts, Podbean, Radio Public, Tunein Radio, google play, etc. RSS feed: https://audioboom.com/channels/4642443.rss NEW: The SpaceTime with Stuart Gary merchandise shop. Get your T-Shirts, Coffee Cups, badges, tote bag + more and help support the show. Check out the range: http://www.cafepress.com/spacetime Thank you. NEW: Help support SpaceTime and get a free audio book of your choice, plus 30 days free access from audible.com. Just visit www.audibletrial.com/spacetime or click on the banner link at www.spacetimewithstuartgary.com Email: [email protected]
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Alien Life on Proxima b: A Second Earth or Waterworld? | Alien Analysis
Proxima b, also known as Proxima Centauri b, is the closest known exoplanet to our solar system that may be habitable to life as we know it. However, there are many challenges to overcome for biology to gain a foothold and evolution to be kickstarted. Because Proxima Centauri is a much dimmer Red Dwarf star, the habitable zone, where most water exists in liquid form, is many times closer to the star. Therefore, Proxima b will likely be both tidally locked, and pounded by solar flares, coronal mass ejections and ultraviolet radiation from its much more active host star. Also, it is possible that this exoplanet is a waterworld meaning that its mineral core is covered by ice. How could a planet drowned by water and irradiated from space be able to overcome these problems and host life? One possible solution may be surprising... Please also check out Parallaxicality's excellent video on Proxima b: https://www.youtube.com/watch?v=yR8HIDJsaHA&t=424s Some of the recent research used for this video follows below. NASA scientists claim that Solar Flares and radiation will have stripped oxygen and hydrogen from Proxima b's atmosphere:
https://exoplanets.nasa.gov/news/1409/planets-of-red-dwarf-stars-may-face-oxygen-loss-in-habitable-zones/ Proxima b's magnetic field may be strong enough to retain atmosphere - Dong, Chuanfei et al. (2017):
https://arxiv.org/pdf/1702.04089.pdf Proxima b may be a water world according to NASA:
https://www.nasa.gov/feature/jpl/study-planet-orbiting-nearest-star-could-be-habitable Side note: The recent news on the 7 earth-sized exoplanets around the nearby red dwarf star Trappist-1 is also highly significant in this light. Like Proxima b, the exoplanets around TRAPPIST-1 would probably also be tidally locked too and thus provide the same conditions. CREDITS: Ambient music:
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Landing on Europa!
NASA has proposed a mission that would land on Europa to search for signs of life & we've learned something sad about one of our neighbors, Proxima b. ----------
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NASA study on Proxima Centauri b reveals it's probably a dead zone
When Proxima Centauri b was first discovered, many scientists had high hopes for it to inhabit living organisms. However, a new study published in The Astrophysical Journal Letters shows that we probably shouldn't expect too much. Read more: http://www.techinsider.io/ FACEBOOK: https://www.facebook.com/techinsider
How Far Away is Proxima B?
How far away are our closest neighbors in the galaxy? How long would it take us to get there? Join StarTalk All-Stars host and SETI Institute Senior Astronomer Seth Shostak and his guest, Penn State Associate Professor of Astronomy Jason Wright as we learn about Proxima B. Plus, comedian Chuck Nice fills us in on the title of his next new album. This is a clip from Exploring Exoplanets, with Seth Shostak on StarTalk All-Stars. Subscribers can watch the full episode here: https://www.startalkradio.net/all-access/exploring-exoplanets-with-seth-shostak-startalk-stars/ If you love StarTalk Radio, don't miss out on any StarTalk news. Sign up for our free newsletter: http://www.startalkradio.net/newsletter/youtube/
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Project Blue Is Searching For Planets | Daily Planet
Project Blue plans to travel to Alpha Centauri to look for another earth like planet.
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