The Exoplanetary Menagerie

Today a massive discovery was announced: 39 light years away in the TRAPPIST-1 star system seven terrestrial planets all orbit extremely close to each other.

…and three are well within their star’s “habitable zone”.

TRAPPIST-1 is an ultra-cool dwarf star. Because its temperature is so much lower than a typical star like the sun (it’s roughly 2550 K while the sun’s 5772 K) planets are able to orbit much closer than they could in our Solar System and sustain habitable conditions. All seven of the discovered exoplanets orbit closer to TRAPPIST-1 than Mercury does to the sun.

Of the different planets discovered, one is immensely Earthlike, having a similar size and receiving roughly the same amount of light as Earth. This place could be a whole lot more like home than anything we’ve found yet. Another planet is a potential water-world, getting about as much light as does Mars (with an atmosphere, yes, it could be a liquid water world).

So close do these planets all orbit near to each other that if you were to go to one and look up, you could see the other planets in the sky above you… and they’d be as big as *or larger than the Moon is in our sky*. It must be one of the most beautiful sights.

So what’s the big deal right? NASA’s already found over 3000 exoplanets - what makes these ones special?

A few remarkable things:

One, TRAPPIST-1 is a member of the M-class stars - stars which make up 70% or so of all the stars out in the Milky Way. Knowing that such stars can host magnificent habitable planetary systems means the search for life just got blown wide open to 70% of the stars in our galaxy.

Two, though 39 light years seems far, this is actually unimaginably close. We’re basically neighbors. The fact that TRAPPIST-1 is so close means that astronomers will be able to subject this place to decades of intense research.

As NASA begins to turn space telescopes such as Hubble, Kepler and Spitzer on TRAPPIST-1, I think we’ll be hearing a lot more from it soon.

Before you go, please consider joining the Planetary Society. If TRAPPIST-1 intrigues you, just wait until you see what else we have happening.

At the Planetary Society we have a radio show with some of the most groundbreaking material to include exoplanet hunters, engineers designing interstellar missions and interviews with astronauts. Most important though, we go to D.C. and make sure the politicians continue funding NASA and space science, and we reach out to people and try to show them what could be.

On that note, here are some artist conceptions of the TRAPPIST-1 star system and what could be:

So good job to the team that made this discovery (especially lead author Michaël Gillon) and I can’t wait to learn more about this place soon.

(Image credit: NASA-JPL/Caltech, NASA/JPL-Caltech/R. Hurt (IPAC), NASA/JPL-Caltech/T. Pyle (IPAC), NASA/JPL-Caltech/R. Hurt (IPAC), ESO/M. Kornmesser and NASA-JPL/Caltech respectively)

I did it.

After a year of talking I finally bit the bullet and got a DSLR camera (Nikon D5300) for astrophotography. Will be using it at the observatory (16″ Cassegrain) as well as during hikes for sweeping vistas under the Milky Way. Very excited to explore astrophotography as a hobby and can’t wait to start uploading pictures

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antikythera-astronomy

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maevetheeuropan

8 years ago

The Five W’s of an Expandable Habitat in Space

Who: In this case, it’s really a “what.” The Bigelow Expandable Activity Module (BEAM) is an expandable module developed by Bigelow Aerospace using a NASA patent conceptualized in the 1990s. It is made up of layers of fabric that will expand when installed and equalize with the pressure of the International Space Station.

What: Sensors inside BEAM will monitor temperature and radiation changes, as well as its resistance to potential orbital debris impacts. During its time on station, the airlock between BEAM and the rest of the space station will remained closed, and astronauts will enter only to collect data and help the experiment progress. If BEAM is punctured, the habitat is designed to slowly compress to keep the rest of the space station safe.

With the BEAM launch, deployment and time on station, Bigelow will demonstrate a number of expandable habitat capabilities, such as its folding and packing techniques, radiation protection capability and its thermal, structural and mechanical durability.

When: BEAM is set to launch on SpaceX’s eighth Dragon resupply mission April 8, and will be docked to the space station for a minimum two-year demonstration period.

Where: The International Space Station’s mechanical arm will transport BEAM from the spacecraft to a berthing port on the Tranquility module where it will then be expanded.

Why: These expandable modules take up less room on a rocket, but once set up, provide more volume for living and working in space.

When we’re traveling to Mars or beyond, astronauts need habitats that are both durable and easy to transport and to set up. That’s where expandable technology comes in. BEAM is one of the first steps to test expandable structures as a viable alternative to traditional space habitats.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

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nasa mission to mars

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maevetheeuropan

8 years ago

bioshock infinite is about to become reality

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maevetheeuropan

8 years ago

Mars used to be much more Earth-like than we once thought. The Curiosity rover recently discovered high levels of manganese oxide, which can only exist in oxygen-rich environments. This means Mars used to have as much oxygen as Earth and plenty of water on its surface. Source Source 2

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mission to mars

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maevetheeuropan

8 years ago

Very Strange Things Happen To Your Body If You Spend A Year In Space

Very strange things happen to your body if you spend a year in space

NASA Astronaut Scott Kelly returns to Earth Tuesday night after spending almost a year in space.

But his 340 days aboard the International Space Station (ISS) haven’t been all fun and games.

Our bodies evolved on Earth, so they’re not built for weightlessness — which is exactly why NASA plans to use Kelly to study the long-term effects of spaceflight the human body.

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mission to mars

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maevetheeuropan

8 years ago

this website pisses me off, everyones always like “space is so cool!” not its not, space is bullshit and i hate everything about it, i genuinely just saw the phrase “a black hole with a mass two billion times the mass of the sun” im so pissed off, shut the fuck up, dont patronise me scientists you know i dont know what the fuck that means, my sad little brain cant comprehend the mass of one sun let alone two fucking billion, i cant even count past 10 without getting confused and youre out here talking about the mass of two billion fucking suns, shut the hell up. and dont even get me started about black holes or the expansion of the universe because thats another two seperate rants entierly. oh and apparently theres a planet made of ice except the ice is also on fire??? yeah sure fucking thing, scientists. and this is just the shit i know about. i purposely dont research space because it pisses me off so much, god knows what other fucking bullshit exists out there that ive yet to read a fucking wikipedia article about. i dont think space is real, literally everything about space is so fucking fake, this is just some elaborate fucking practicle joke. two billion times the mass of the sun, fuck you

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okay But I love it so much

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maevetheeuropan

8 years ago

Join us!

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omg yes yeeeeeeeeeeeeees seeing these things kinda makes me tear up a bit

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maevetheeuropan

8 years ago

Scientists are uncovering a terrible new effect that space might have on our bodies - ScienceAlert