Could We Hide The Earth?
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Theoretically, we could hide the Earth from faraway telescopes, using a properly placed laser pointer. Hosted by: Reid Reimers ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Kevin Bealer, Justin Lentz, Mark Terrio-Cameron, Patrick Merrithew, Accalia Elementia, Fatima Iqbal, Benny, Kyle Anderson, Mike Frayn, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Chris Peters, Kathy Philip, Patrick D. Ashmore, Thomas J., charles george, and Bader AlGhamdi. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://arxiv.org/pdf/1603.08928v1.pdf https://www.sciencedaily.com/releases/2016/03/160331105930.htm http://exoplanetarchive.ipac.caltech.edu/docs/counts_detail.html http://www.openexoplanetcatalogue.com/ http://kepler.nasa.gov/Mission/faq/#c1 http://www.seti.org/seti-institute/project/details/fermi-paradox http://earthsky.org/space/what-is-the-ecliptic http://hyperphysics.phy-astr.gsu.edu/hbase/optmod/qualig.html http://earthsky.org/space/what-is-the-electromagnetic-spectrum http://voyager.jpl.nasa.gov/spacecraft/goldenrec.html Images: https://en.wikipedia.org/wiki/Ecliptic#/media/File:Earths_orbit_and_ecliptic.PNG https://en.wikipedia.org/wiki/Kepler_(spacecraft)#/media/File:NASA-KeplerSpaceTelescope-ArtistConcept-20141027.jpg http://kepler.nasa.gov/mission/QuickGuide/missiondesign/photometer/ https://en.wikipedia.org/wiki/Absorption_spectroscopy#/media/File:Sodium_in_atmosphere_of_exoplanet_HD_209458.jpg
Comments
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What if we are the first "life" in the universe, and we have to wait until other planets have life in like millions of years?
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this guy is creepy and hard to understand
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playing galactic peek-a-boo to fuck around with aliens tho
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so that means the cold zone could just be a whole bunch of cloaked planets
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We are doomed if they use gravitational waves to find us?
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your voice is far too good to be on sci show. u should be on tv
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Yeah but they would still notice us since they only need to measure the amount of gravitational pull that our planets has on the sun and realize that the sun's swinging so much that they're missing a small terrestrial planet...
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What about the time that it would take, to the camouflage to take action, did the astronomers speak about that?
Light takes time to travel, so the light (or data) of us without camouflage is already travelling in space. -
bad news guys : no one out there to blink.
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just put the earth in the S.E.P field and wam bam we're invisible
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Wouldn't this also not worked based solely on the fact that any light we see from exoplanets is light that was cast off millions of years ago, and, anyone we would be hiding from would be so vastly from the future that its redundant to bother trying to hide, as we'd be long gone at the time they they saw us, let alone get to us.
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Peekaboo, i see Youtube
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"Only on for 13 hours per year" - if I'm understanding, they are implying that the laser will only need to be on when the earth is in transit... But the earth is constantly in transit from a shifting perspective. Unless, by the 13 hours they mean that they will only turn it on when it's in transit relative to specific, close star systems.
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my solution to the fermi paradox: we are first. done
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Someone around here read Death's End...
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This is the most pointless SciShow space video yet - its about ... what? Weird hypothetical lasers nobody wants and transit photometry explained again.
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`Forget about rabbit in the hat. The greatest magician trick will be done by scientists - they will hide the Earth.
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Pox! Call off the invasion. They can use lasers now.
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Well all of this is kind of pointless if you consider Gravitational Lensing! Changes in Light is not the only method of discovering planets, the star also shifts slightly because of the planets gravity. That is how a great number of planets has been discovered. Kind of disappointed you did not even mention that.
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Pfft, the only space lasers I want to hear about are the ones you're going to use to make my Lightsaber.
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