First Discovery Of Atmosphere On Known Exoplanet
First Discovery of Atmosphere on Known Exoplanet
While news of Trappist-1′s potentially inhospitable environment made its way through the news feeds, a new discovery emerged to make up for it: an existing atmosphere on exoplanet GJ1132b.
Located 39 light years away (just around the corner in galactic terms), the exoplanet is similar to Earth in size and mass, and is in close-orbit to its star: a dim red dwarf just slightly cooler and smaller than our own Sun. It was discovered in 2015, but it’s only now that scientists have been able to take a closer look at its composition.
While the distance between GJ and its host star is more similar to the one between Venus and our Sun, therefore most likely rendering the exoplanet incapable of hosting life due to extreme surface temperatures of up to 370 degrees Celsius/700 degrees Fahrenheit, the most important aspect to focus on is the discovery is the atmosphere that exists on GJ.
Using advanced technology that picks out biochemical signatures such as those of oxygen, methane, and hydrogen, scientists have identified a thick atmosphere of either steam or methane surrounding GJ. While this is not a certain indicator of life, it is an crucial step in increasing our knowledge of potentially habitable alien planets out there.
It is definitely interesting to see that scientists have found the first alien atmosphere that isn’t Earth’s. It seems that many of the Earth-like planets scientists have discovered are inclined to orbit red dwarf stars like Earth and that of GJ1132b. I wonder if we specifically target finding red dwarves, will wel increase our chances of finding more and more Earth-like exoplanets that could be capable of having life? It’s something to think about as we continue moving into the future.
More Posts from Catchconstellations-blog and Others
Meet Our 7 Newest Planetary Neighbors
On Wednesday, February 22, NASA took the whole world by storm when they announced the incredible discovery of 7 Earth-sized exoplanets – all of which could potentially have the right conditions for life to exist!
While there has been a relatively continuous stream of newly found exoplanets in the past years, this exoplanet system, named TRAPPIST-1 for the Chile-based telescope that first discovered the planets back in May, is particularly special because of three main reasons:
1.) They are considered relatively close (40 light years/235 trillion miles) to Earth.
2.) They are the first known system of Earth-sized planets that orbit a single parent star, with 3 planets located in the “Goldilocks zone”, the astrophysical orbit that has just the right conditions for allowing liquid water, and by extension, life, to exist. While all 7 could have liquid water, these 3 have the highest chances.
3.) Their parent star, an ultra-cool dwarf, has temperatures so low that liquid water can exist on the planets closest to it; what’s more, the planets are so incredibly close to their parent star – all 7 are closer to their parent star than Mercury is to our own Sun – that someone standing on the surface of each planet could potentially see the physical features of the other planets.
The implications of this find is mind-blowing: at the moment, Earth is the only planet we know that exists with liquid water in our solar system’s Goldilocks zone. We have no other suitable planet we can use for comparison, which is why the search for life in outer space can seem futile. But this discovery of 7 whole Earth-sized planets with the right conditions for water and life to flourish sparks the age-old question into overdrive – are we alone in the universe or not?
Earth is no longer the potentially only life-sustaining planet; we have 7 exoplanets, 3 in the Goldilocks zone, that can harbor water and life. That just blows my mind, and while I have often lamented in the past that I was born too late for traveling the world and too early for exploring space, I am grateful to be alive in this time of immense space-science discovery.
But what next? We’ve discovered this new system, what are we going to do about it? According to NASA, a new telescope called the James Webb Space Telescope will be launched in 2018. Equipped with state-of-the-art technological capabilities such as increased sensitivity sensors, it will be able to detect chemical signals present in a planet’s atmosphere such as methane, oxygen, and water. And hopefully, it will tell us more about our 7 new neighbors – and what could be on them.
Beautiful photo! This reminds me of the time my family and I went to Yellowstone National Park around four years ago. We arrived at the park around midnight and were treated to the clearest star-filled night sky we had ever seen. It was stunning - the stars stretched from one horizon to the next, and there was no end to them. It made me feel very small in the grand scope of the universe, and just how much we miss out when we become accustomed to city lights and the urban sprawl. Makes me want to go camping in some remote place again.
The Milky Way from Acadia National Parks Thunder Hole
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List of Online Resources
Over the past week I’ve been compiling a short list of online resources I often use when I’m doing anything space-related online, whether it be writing summaries of news updates or trying to understand some complicated science topic. Hope these are useful!
On getting up-to-date news:
ScienceDaily
Space.com
Science Mag
On understanding scientific topics:
Crash Course
Khan Academy
Space Exploratorium
Of course, there are many resources out there, but these are the ones I use most often.
Beautiful! Would like to visit all of these places someday <3
World’s largest salt flat: Salar de Uyini, Bolivia
Let me start off by saying that I think Crash Course is a great resource for people who want to get the basic details of any subject the creators offer. CC’s series for astronomy is particularly wonderful. The science behind astronomy and space can be mind-boggling due to the complexities of physics, mathematics, photonics, and other relevant subjects; CC makes it easy and fun to learn about astronomy without being too technical or in-depth. Great series of videos if you have time to check them out!
Absolutely love this shot from the extremely talented Nicholas Buer. Reminds me of this awe inspiring quote from physicist Brian Greene about the challenge humanity faces to understand the cosmos:
“We all love a good story. We all love a tantalizing mystery. We all love the underdog pressing onward against seemingly insurmountable odds. We all, in one form or another, are trying to make sense of the world around us. And all of these elements lie at the core of modern physics. The story is among the grandest – the unfolding of the entire universe; the mystery is among the toughest – finding out how the cosmos came to be; the odds are among the most daunting – bipeds, newly arrived by cosmic time scales trying to reveal the secrets of the ages; and the quest is among the deepest – the search for fundamental laws to explain all we see and beyond, from the tiniest particles to the most distant galaxies.” — Brian Greene
Exploration is wired into our brains. If we can see the horizon, we want to know what’s beyond.
Buzz Aldrin
A 2015 documentary on the history of space, the current progress of space exploration, and where we might go in the future.
If you have around an hour to spare, and a space itch to scratch, this is an awesome documentary to watch! It has very good scientific support, fantastic HD visuals, and exciting narration. It really opens your eyes to how much we’ve discovered only recently, and also how much we still don’t know. Great documentary!
Origins is one of my favorite documentaries of all time. Neil deGrasse Tyson does a marvelous job of narrating a story interwoven with strong scientific evidence, great artistic visuals, and immersive story-telling. While Origins is an old documentary (first shown in 2004), many of its content is still applicable today.
One of my favorite aspects of Origins is its ability to explain to the viewer why understanding the start of our universe is important. Often times, the answer to “How did life start?” is filled with complex scientific concepts and theories. Origins breaks down these complicated explanations into points that anyone can digest. I highly recommend it to any space enthusiast out there.
Hey Dianne. I love love love this theme! It is sooo cool. I have no idea how you did it (was it witchcraft?!?!). I love that you have this calming music playing as well. everything is just awesome --Jennifer Holden
Hi Jennifer, thank you so much for visiting my blog! The theme took forever to edit and format, but I think it’s totally worth it :D
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catchconstellations-blog reblogged this · 8 years ago
CONSTELLATION: (noun) Group of stars that form a recognizable pattern to which a mythological or earth-based name is assigned Pattern of stars whose name or is associated with different stories and meanings Story told by stars connected across the infinite night sky, overlapping with countless other stories that have unfolded from ancient supernovas, whose imaginary lines urge our eyes up from the chaos of the world around us to the unknown vastness in which we are but a speck of dust -------- Hi! I’m a starry-eyed astrogeek named Dianne who loves absolutely everything that has to do with the stars and outer space. When I’m not studying or preparing to take over NASA one day, you can find me trying to stargaze despite city lights or happily planning my next road trip.
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