Showing posts with label solar system. Show all posts
Showing posts with label solar system. Show all posts

Wednesday, December 8, 2021

The most extreme exoplanet has been found near Beta Centauri.

   The most extreme exoplanet has been found near Beta Centauri.



"This artist’s impression shows a close-up of the planet b Centauri b, which orbits a binary system with mass at least six times that of the Sun. This is the most massive and hottest planet-hosting star system found to date. The planet is ten times as massive as Jupiter and orbits the two-star system at 100 times the distance Jupiter orbits the Sun. Credit: ESO/L. Calçada" (https://scitechdaily.com/surprise-planet-discovered-around-extreme-star-pair/)

The Beta Centauri is the second brightest star in the Centauri constellation. The brightest star of that constellation is Alpha Centauri. 

The Beta Centauri (Beta Cent or Hadar) is a two-star system that has at least three components two stars and one planet. The members of this system are Beta Centauri Aa, Beta Centauri Ab, and Beta Centauri B. There is only one member of this system Beta Centauri A which has confirmed spectral type. 

That bight Beta Centauri Aa has a spectral class B1 III.  And that means the star is extremely bright. That brightness will make the Beta Centauri B disappear. The exoplanet that orbits in this system is so-called hot Jupiter. The observation is made by using ESO (European Southern Observatory). And that is the first case, where an exoplanet is found near extremely bright stars. 





The strong X-ray emission from the atmosphere of an exoplanet is the thing that uncovers the existence of Beta Centauri Bb. Which orbits the Beta Centauri 100 times more distant than Jupiter orbits the Sun. 

This means also exoplanets are forming X-ray emissions. The exoplanets that are orbiting bright stars are in the situation, that the high-energy electrons and ions are impacting their atmosphere. And that thing makes the exoplanets visible in X-ray images. 

The new exoplanet Beta Centauri Bb Is an example that also bright double stars.  Or stars, where are multiple members in the system, can have planets. The planet of Beta Centauri is extremely hostile to lifeforms, but it's the evidence that also other than lone stars can have planetary systems. 

The thing is that the exoplanets are very interesting targets for astronomers. They can have lifeforms and maybe someday astronomers can find the intelligent alien species on those planets. The thing is that there is the possibility that the Beta Centauri Bb is not formed in the system of Beta Centauri. It could be a rogue planet that is trapped in the gravity field of Beta Centauri. 


xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

This image shows the most massive planet-hosting star pair to date, b Centaur




"This image shows the most massive planet-hosting star pair to date, b Centauri, and its giant planet b Centauri b. This is the first time astronomers have directly observed a planet orbiting a star pair this massive and hot. The star pair, which has a total mass of at least six times that of the Sun, is the bright object in the top left corner of the image, the bright and dark rings around it being optical artifacts".

"The planet, visible as a bright dot in the lower right of the frame, is ten times as massive as Jupiter and orbits the pair at 100 times the distance Jupiter orbits the Sun. The other bright dot in the image (top right.) Is a background star. By taking different images at different times, astronomers were able to distinguish the planet from the background stars"

"The image captured by the SPHERE instrument. On ESO’s Very Large Telescope and using a coronagraph. Which blocked the light from the massive star system and allowed astronomers to detect the faint planet. Credit: ESO/Janson et al.(https://scitechdaily.com/surprise-planet-discovered-around-extreme-star-pair/)

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx




https://scitechdaily.com/surprise-planet-discovered-around-extreme-star-pair/

https://en.wikipedia.org/wiki/Beta_Centauri

https://en.wikipedia.org/wiki/Stellar_classification


https://thoughtandmachines.blogspot.com/

Wednesday, May 9, 2018

SETI-program, and searching extraterrestrial civilizations


(Picture I)

http://crisisofdemocracticstates.blogspot.fi/p/seti-program-and-searching.html

Kimmo Huosionmaa

SETI-program is actually umbrella-term for many radio-astronomical programs, what are looking for strange radio signals from space. Those program's primary or secondary mission is to find the extraterrestrial radio signals, what are send by intelligent alien civilization. Some of those programs primary mission are to hunt for black holes or make maps of other planet's surface. But the SETI (Search for Extraterrestrial Intelligence) is the fascinating projects on the Earth.


With this program the computer scientists have created new kind of ways to analyze big data masses, with distributing data processing methods, where the computers would share their resources over the Internet, and this methodology makes new kind of network-based CAD and graphics programs like "Renderfarm" possible, but as we know the distributing data processing makes also possible to connect supercomputers together. Those ultra-powerful computers are able to connect together similar way as regular PC:s by using the Internet.


SETI uses those systems in the mission, where they are analyzing very large mass of information, and in the same purpose uses NSA (National Security Agency)  their computers. In the real world, there would be not much difference between radio astronomy and electronic intelligence. But when we are thinking about the purpose or benefit of SETI itself is that we must be ready to face an alien. We don't actually know if there is an alien near our solar system. We have ever been actually visited even in Alpha Centaur, and that's why some sarcastic person might ask, "have you visited there recently"?


If somebody says that there is not alien civilization. Actually, we probably don't know what do we know all planets even in our own solar system. And when we are thinking about the hypothetical humanoids and their hypothetical SETI-program, we must think that they might want to observe us without disturbing us. And that would mean, that those aliens would want real information of our planet. In this case, they might think, that we might be species, what is under control of some other species.


This hypothetical thing means that those humanoids would use "Dyson's sphere" type ball-shaped space stations for observing us. And in the worst case this "Dyson's sphere" would be the same kind of battle station as the "Death Star" in the movie Star Wars. This type of combat stations could be covered by ice, what makes them very difficult to separate from other ball-shaped objects in our solar system. This is one problem with communicating between civilizations. We don't know are those aliens really coming in peace. And another very big problem with the communication between civilizations is that we don't know are those hypothetical aliens actually only the users of their systems?


And this makes very difficult to make the diplomatic relationship with alien civilizations. If those aliens would want to colonize the earth, they might take one state under the control by giving they some war equipment, and that would make that state or nation to bluster to other nations. That way to use alien technology would make that nation addicted to humanoid technology, what they cannot produce. This is the reason, why we must be very careful with this kind of things. If we cannot produce our own systems and technology, would we be addicted to an indulgence of hypothetical humanoids?


In this very shocking scenario, the human race would be the slave by using the methodology, where aliens would give us a couple of their war machines, what are superior to our own aircraft. Then they would play gods in our planet, and this method where some civilization would be addicted by the weapons, what they could not the product is well known from the age of colonialism. In this case, the aliens would act like European colonialists, who destroyed many civilizations from Earth.


And I certainly don't hope this kind of future to mankind. We must stand on our own feet, and we can turn incoming asteroids away without help from humanoids, and we must feel our responsibility when we are going to other solar systems. In the future, we might be the visitors in some strange solar system and meet the primitive aliens. There we must follow the policy, that we don't addict those civilizations to our own technology. In that case, we are adults, and they are children.


We must teach them independence because in the worst case, would the result be the war between civilizations. That would be and at least the human colonies on that planet. When the help for those colonies would send from the Earth, the time of travel would take hundreds of years, and in that time would the opponent create the space flight, even if they were lived in the stone age in this hypothetical accounting and colonizing some primitive civilizations in distant future, when mankind would send the space probes to another solar system.

Sources:

Picture I:

https://geneticliteracyproject.org/wp-content/uploads/2016/01/MARS-COLONY-HERO-PSD.jpg

http://crisisofdemocracticstates.blogspot.fi/p/seti-program-and-searching.html

Could a graviton be a low-energy photon?

Image of a photon. We can think of gravity as forming when particles or objects spin. That spin binds energy from around it. That spin turns...