Hubble spots liquid water on a ‘super-Earth’ 110 light-years away – gpgmail


Water is not uncommon to find in our galaxy in ice or gaseous form, but liquid water is quite rare — and liquid and gaseous water on an Earth-like exoplanet? That’s never been observed… until now. Astronomers spotted this celestial unicorn, called K2-18 b, using the venerable Hubble space telescope.

K2-18 b is a “super-Earth,” a planet with a mass and size approximately like our own. Not only that, it exists in its solar system’s “habitable zone,” meaning a range of temperatures where liquid water can continuously exist. It’s about 110 light-years away in the constellation Leo.

Of course there are many super-Earths, and many planets in habitable zones, and many planets with water — but they’re never one and the same. This is the first time we’ve found the trifecta.

Researchers used past Hubble data to examine the spectral signature of light shining from K2-18 b’s sun through its atmosphere. They found evidence of both liquid and gaseous water, suggesting a water cycle like our own: evaporation, condensation, and all that.

To be clear, this is not an indication of little green men or anything like that; K2-18 b’s red dwarf sun is absolutely bombarding it with radiation. “It is highly unlikely that this world is habitable in any way that we understand based on life as we know it,” the Space Telescope Science Institute’s Hannah Wakeford told Nature.

Too bad — but that wasn’t what scientists were hoping to find. The discovery of an Earth-like planet with an Earth-like water cycle in the habitable zone is amazing, especially considering the relatively small number of exoplanets that have been examined this way. The galaxy is full of them, after all, so finding one with these qualities suggests there are plenty more where K2-18 b came from.

This discovery is an interesting one in another fashion: It was done, like lots of others are these days, by performing after-the-fact analysis on publicly available data (from 2016 and 2017), and the analysis used open-source algorithms. Essentially both the data and the methods were out there in the open — though naturally it takes serious scientific effort to actually put them together.

Two papers were published on K2-18 b, one from the University of Montreal and one from University College London. The former appeared on preprint site Arxiv yesterday, and the other was published in the journal Nature Astronomy today.


10 minutes mail – Also known by names like : 10minemail, 10minutemail, 10mins email, mail 10 minutes, 10 minute e-mail, 10min mail, 10minute email or 10 minute temporary email. 10 minute email address is a disposable temporary email that self-destructed after a 10 minutes. https://tempemail.co/– is most advanced throwaway email service that helps you avoid spam and stay safe. Try tempemail and you can view content, post comments or download something

NASA’s newest planet-hunting satellite finds three new worlds – gpgmail


NASA’s Transiting Exoplanet Survey Satellite, a planet-seeking satellite that launched aboard a SpaceX Falcon 9 rocket last April, has found three new worlds that orbit a nearby dwarf star that is both smaller and cooler than our own Sun.

The newfound planets range in size and temperature, but are all bigger than Earth and with a higher temp on average — which are calculated only based on their distance from the star they orbit, and its energy output, without factoring in any atmospheric effects since it’s not yet known whether they have atmospheres at all. At the low end, there’s TOI 270 d, which has an average temp of 150 F — almost three times Earth’s own.

Both TOI 270 d, the farthest from its own system’s central star, and TOI 270 c, its nearest neighbor, are thought to be primarily gaseous and most closely resemble Neptune in our own Solar System. These aren’t really equivalent, however, as they’re much smaller, and researchers at NASA say they’re actually more likely new types of planets not seen anywhere in our own local solar backyard.

The planets overall are interesting to researchers because they are all between 1.5 and just over 2 times the size of Earth, which is actually an unusual size for planets to be when considered overall. The TOI 270 system is also pretty much perfectly positioned for study by the forthcoming James Webb Space Telescope, so it presents a great opportunity for future research once that space-based observatory gets up and running in 2021.


10 minutes mail – Also known by names like : 10minemail, 10minutemail, 10mins email, mail 10 minutes, 10 minute e-mail, 10min mail, 10minute email or 10 minute temporary email. 10 minute email address is a disposable temporary email that self-destructed after a 10 minutes. https://tempemail.co/– is most advanced throwaway email service that helps you avoid spam and stay safe. Try tempemail and you can view content, post comments or download something