Writings about astronomy and technology.

"Artist’s conception of a rocky Earth-mass exoplanet like Wolf 1069 b orbiting a red dwarf star. If the planet had retained its atmosphere, chances are high that it would feature liquid water and habitable conditions over a wide area of its dayside. Credit: NASA/Ames Research Center/Daniel Rutter" (ScitechDaily.com/Astronomers Discover Earth-Size Planet – Promising Target in the Search for Alien Life) The new exoplanet Wolf 1069 b is a giant Earth-mass rocky planet. The new exoplanet orbits red dwarf Wolf 1069 in the habitable zone. The location of Wolf 1069 is in the Cygnus constellation. The surface temperature of that star is 3158±54K or 2884,85±54C.  That means this M5 spectral class red dwarf is a very small, and cold object if we compare it with the Sun. And, its solar system is also small.  The distance between Earth and Wolf 1069 is 31.229 ly. So, it's quite near to us. The exoplanet trajectory fits in Mercury's trajectory. If we want to compare that Wolf 1069

Artist's illustration of exoplanet LHS 475 b The existence of an Earth-size exoplanet in a distant solar system is a remarkable thing. The new small rocky planet. Called LHS 475b orbits its sun only in two days. The LHS 475b's atmosphere is mostly carbon dioxide.  And that means the temperature on that planet's dayside is hot. As you might guess the LHS 475 b orbits red dwarf star LHS 475. The surface temperature of this planet is 3312±157 K or about 3039 C.  That means LHS 475 b is dead and unable to host life. But that exoplanet is one of the most incredible things that the JWST telescope found. The ability to see that kind of exoplanet is a big change. The problem is that most confirmed exoplanets are orbiting red dwarfs. So planets are orbiting those stars very close. And tidal forces lock them in one direction. Their dayside is very hot.  "A flat line in a transmission spectrum, like this one, can be exciting – it can tell us a lot about the planet. Researchers us

Above: artist's vision of the exoplanet WASP-39b WASP-39b is hot Saturn. Its mass is 0,94 times Saturn and 0,28 times Jupiter. The size of that exoplanet is 1,5 times Jupiter.  And the reason for that is WASP-39b orbits so close to its sun. The distance to the WASP-39 system is 700 light years.  The WASP-39 is a G-spectral class star. And that means star WASP-39 is quite similar to the Sun.  The size of that star is slightly smaller than our Sun. And that makes the WASP-39b so interesting. There are known many gas giants that are orbiting M-type red dwarfs in close distance.  But quite a small (read low-mass) gas planet that orbits quite a hot star very close is interesting. M-type red dwarfs have solar systems, where all planets are orbiting inside the distance of planet Mercury from their sun. But the WASP 39 is much hotter than some Gliese 581.  The trajectory of WASP-39b is closer than the trajectory of Mercury. And the intensive heat causes the gas giant to bulge to an extreme

Above: Artists' impression of exoplanet Wasp-39B Exoplanet Wasp-39b has carbon dioxide in its atmosphere. That thing is one of the possible marks of the lifeforms. But there is also the possibility that oxygen is connecting to carbon in the atmosphere of Wasp-39b. The Wasp-39b is a giant exoplanet. It's so-called hot Jupiter and the atmospheric temperature of that planet is 900 degrees Celsius. That is an extremely hot planet, so there should not be any lifeforms.  But there is one possibility that is not what somebody wants to hear. The possibility is that the carbon dioxide is coming from the high atmosphere of some invisible target near Wasp-39b. The object can be some kind of moon near Wasp-39b. There is also water (H2O) and sodium (Na) in that planet's atmosphere.  The Wasp-39b orbits its central star in four days. The mass of the Wasp-39b is one-quarter of Jupiter. So its mass is similar to Saturn but the size is larger than Jupiter. The reason for that is that the Wa

An artist's illustration of the view. From the exoplanet LHS 1140b. That giant orbits an M dwarf star about one-fifth the size of the sun.  The planet could be a prime target for follow-up studies in the search for life elsewhere in the universe. (Image credit: M. Weiss/CfA )(Astronomy.com/Newfound Alien Planet Is Best Place Yet to Search for Life).  Water is fairly common in the universe. But the problem is that life needs liquid water. There are some models that in the water droplets of the vapor in the atmosphere of the hot planets can form the RNA molecules. In that case, the water droplets with RNA could be the most primitive organisms that we can imagine. Those hypothetical organisms would be only the RNA bites and organelle in the water droplet that can copy itself.  The mass of that exoplanet is about 6,6 times Earth, and the size of it is about 1,4 times of Earth. There are calculations that this 6,6 Earth mass is the limit of the mass of the planet. That can host life.  S

If you want to find an alien, you must prepare a long search. If we want to find aliens, we must realize that there are many things, what we must consider, before we even can hope to find something, what would seem like even primitive life forms. Finding the habitable planet is a little bit more complicated thing that finding some Jupiter-type worlds, and then calculating the Kepler's radiuses. The thing is that the position to the planet is not everything in the forming of lifeforms. Also, things like molecular nebulas between star and planet affect that thing, and then the thing that might make limits to that phenomenon is that if the solar system is in the straight in the line of the eruption of some magnetar or black hole.  That kind of thing can cause that the surface of the planet would sterilize immediately. If we are thinking about locked planets the main problem in those words is that the dayside is extremely hot, and then another side is extremely cold. That effe