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Sioux Falls Scientists endorse Alien Planets Revealed for revealing
how we are looking for alien planets today. How much
we can "see", but how little we actually can see.

Alien Planets Revealed

Alien Planets Revealed (2014) - 60 minutes
Alien Planets Revealed at Amazon.com

It's a golden age for planet hunters: NASA's Kepler mission has identified more than 3,500 potential planets orbiting stars beyond our Sun. Some of them, like a planet called Kepler-22b, might even be able to harbor life. How did we come upon this distant planet? Combining startling animation with input from expert astrophysicists and astrobiologists, Alien Planets Revealed takes viewers on a journey along with the Kepler telescope. How does the telescope look for planets? How many of these planets are like our Earth? Will any of these planets be suitable for life as we know it? Bringing the creative power of veteran animators together with the latest discoveries in planet-hunting, Alien Planets Revealed shows the successes of the Kepler mission, taking us to planets beyond our solar system and providing a glimpse of creatures we might one day encounter.

7-27-16 Old planets always get too hot or cold for life in the end
Old planets always get too hot or cold for life in the end
Searching for alien life on planets orbiting older stars may be fruitless - they nearly always lose their liquid water with time. Age matters. Searching for alien life on planets orbiting older stars may be fruitless because they always become prohibitively hot or cold. The search for life on other worlds has focused on planets in what’s known as the habitable zone – the ring around stars where it’s the right temperature for liquid water. That has led some to target planets orbiting red dwarf stars, as their smaller size and cooler temperatures mean planets in the habitable zone are closer in, and so easier to spot. But we should also look for planets whose stars are the right age, regardless of their size, say Shintaro Kadoya and Eiichi Tajika at the University of Tokyo, Japan.

7-1-16 Impossible vanishing stars could be signs of advanced alien life
Impossible vanishing stars could be signs of advanced alien life
Finding extraterrestrial civilisations with technology far beyond our own could be as simple as catching stars or galaxies in a disappearing act. It’s a cosmic game of hide-and-seek. A team of astronomers say that the next search for advanced extraterrestrial civilisations should look for stars – or even galaxies – that have vanished without a trace, as anything so unexplainable could only be due to life far more intelligent than us. (Webmaster's comment: Blaming space aliens seems to be the simplest explanation for everythng. But we've never gotten any real evidence of their existence. Scientists should keep this bullshit on the back burner until they come up with some evidence. All they do is create a lot of public suspicion of the real results that good scientists produce.)

4-20-16 To find ET, look at who’s (maybe) looking at us
To find ET, look at who’s (maybe) looking at us
Eighty-two known stars within 3,500 light-years of Earth could host advanced civilizations that can see Earth cross in front of the sun. Within 3,500 light-years of Earth, there are 82 known stars that might host curious extraterrestrials who could detect Earth’s shadow, the researchers report in the April Astrobiology. The stars, roughly similar to or a bit cooler than the sun, encircle the solar system in nearly the same plane as Earth’s orbit — a narrow band that’s home to the 12 zodiac constellations. And these are just the stars that astronomers know about. Heller and Pudritz calculate that there could be 300,000 stars hosting 30,000 rocky habitable worlds in this sliver of the galaxy. Since there’s a chance that the inhabitants of those worlds know about us, they might already be trying to get in touch, the researchers suggest. Even if we have no interest in an interstellar palaver, they say, we can’t hide from aliens that might see Earth silhouetted against the sun. (Webmaster's comment: Since sending messages back and forth will take hundreds and even thousands of years why bother. Sending a message for which we would not get a reply back until 200 years in the future makes little sense.)

4-19-16 New telescopes will search for signs of life on distant planets
New telescopes will search for signs of life on distant planets
Atmosphere of a world in another solar system might reveal hints of alien biological activity. A suite of current and future telescopes (Spitzer, TESS, Hubble, James Webb and WFIRST-AFTA) could identify remote habitable worlds and peer into the newfound atmospheres for hints of alien biology. Our galaxy is teeming with planets. Over the last 25 years, astronomers have cataloged about 2,000 worlds in 1,300 systems scattered around our stellar neighborhood. While most of these exoplanets look nothing like Earth (and in some cases, like nothing that orbits our sun), the bonanza of alien worlds implies a tantalizing possibility: There is a lot of real estate out there suitable for life. On Earth, life alters the atmosphere. If plants and critters weren’t around to keep churning out oxygen and methane, those gases would quickly vanish. Water, carbon dioxide, methane, oxygen and ozone are examples of “biosignatures,” key markers of a planet crawling with life as we know it. Setting aside questions about how recognizable alien life might be, detecting biosignatures in the atmosphere of an exoplanet would give astronomers the first strong clue that we are not alone.

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Alien Planets Revealed

Sioux Falls Scientists endorse Alien Planets Revealed for revealing
how we are looking for alien planets today. How much
we can "see", but how little we actually can see.