Showing posts with label planet. Show all posts
Showing posts with label planet. Show all posts

Saturday, August 16, 2025

An Earth-size exoplanet is in a death spiral in its solar system.

   An Earth-size exoplanet is in a death spiral in its solar system. 

"This artist’s illustration shows an Ultra-Short Period (USP) planet orbiting its star. A newly-discovered USP runs the risk of either being torn to pieces by its star or being sucked in and destroyed. Credit: NASA, ESA, and A. Schaller (for STScI)" (ScitechDaily, This Earth-Sized Exoplanet Is Racing Toward Its Own Destruction)

Nothing is forever in the universe. 

Researchers noticed that the K-type orange star’s TOI-2431b is closing its star. And that earth-size exoplanet is going to its destruction. That exoplanet is an example that if a planet orbits too close to a small star can cause a situation. The planet starts to fall into the star. The small stars have one problem. Their gravity is weak. That means they cannot stabilize their solar system in the same way as bigger stars. In small star systems, the smaller objects can have a bigger effect than in the larger stars’ solar systems. An interesting detail is that TOI-2431 is a K-type orange star. But maybe those destructions are more common in the universe than nobody expected. 

In the universe, most stars are red dwarfs. Those stars are very light, and that means their solar systems are smaller than our solar system. Those stars’ weak gravity means that red dwarfs’ planets must orbit very close to their stars. The close distance causes danger than when something like a meteorite. That comes out from those solar systems pushes their planet to a red dwarf. 

And that can cause a situation where the planet impacts the red dwarf. Those planets can follow a spiral trajectory, and sooner or later. Those planets will change their orbital period into ultra-short-period planets (USP). Then the tidal forces from a red dwarf can rip them into pieces. Or they impact the host star. This is the thing in all gravitational centers in the universe. 

The red dwarf and its planetary system can pull other objects to them from a long distance. That means the lonely red dwarfs are more at risk of facing those cosmic intruders than red dwarfs that are near some larger stars. The lonely red dwarf pulls objects straight to its system. But in cases like Proxima Centauri, the dominating binary star can pull those particles into its solar system. And that protects Proxima’s planets from cosmic impacts. 


"This figure from the research shows that among USP planets, TOI-2431 b has the shortest timescale until tidal disruption of ∼31 Myr. Credit: Tas et al. 2025 A&A" (ScitechDaily, This Earth-Sized Exoplanet Is Racing Toward Its Own Destruction)


The reason why red dwarf systems are a riskier place for cosmic impacts than our solar system is this. Those solar systems are very small. These planets are closer to each other than in our solar system. The red dwarf is more dominant than the Sun. When an object like a comet or asteroid comes to our solar system from outside the Kuiper Belt, that object must travel longer time. There are four massive gas giants on its journey, and they can pull that intruder into their gravity fields. In small solar systems, planets are closer to their sun. There might not be dominant planets like Jupiter. 

The object comes straight to the system, and those giant gas planets do not have the same time to curve the cosmic visitor's trajectory as Jupiter and other gas planets have in our solar system.  When those cosmic intruders come to the solar system that fits inside Mercury’s trajectory, that thing has no time to change its course.  In those small solar systems, the horizontal gravity effect has no time to affect the trajectories of high-speed objects. 

Because planets are closer to the cosmic intruder, they have a higher chance of hitting it than in our solar system. The main thing is that. The red dwarf is lighter than the sun. It cannot stabilize its solar system same way as the Sun. And if there are gas giants and rocky planets in the same red dwarf solar system, the rocky planet is on the opposite side of the red dwarf to the Earth-sized exoplanet. Then the common gravity effect of those objects can pull one or more smaller planets from their trajectory. That can cause a situation where those planets fall into the red dwarf. 

Same way. The rogue planet that passes the red dwarf can pull those planets into that star. Things like ion beams or interstellar shockwaves can push those small stars’ planets out of their trajectory. Red dwarf systems are not as stable as larger stars’ solar systems. Those planets are orbiting closer to the lightweight star. And that means the smaller things in those systems can have a bigger effect than in the larger stars’ solar systems. If a Jupiter-size planet goes behind the sun, that thing has a smaller effect on Earth than if a similar planet goes behind the red dwarf that Earth-size exoplanets orbit. 

Rogue planets that travel all around the universe, out from their solar systems, can pull other particles into them. And that can cause multiple impacts to those planets that escaped from their solar systems. 


https://scitechdaily.com/this-earth-sized-exoplanet-is-racing-toward-its-own-destruction/


https://en.wikipedia.org/wiki/TOI-2431_b


https://en.wikipedia.org/wiki/Ultra-short_period_planet


Saturday, January 14, 2023

The sound of the devil's sandstorm was the first time recorded on Mars.




"Dust devils on Mars are small whirlwinds of dust that occur when the sun heats the surface of the planet, causing the air to rise and form a vortex. These dust devils can reach heights of up to several kilometers and have winds that can reach speeds of up to 60 km/h. Dust devils are common in many areas of Mars and can be found in both the northern and southern hemispheres". (ScitechDaily.com/Scientists Obtain First-Ever Sound Recording of Dust Devils on Mars)


The devil's sandstorms form in a weak gravitational field when the wind rises sand flowing over the planet's surface. The devil's sandstorms create very high-voltage electricity when small sand bites gall against each other. That thing can cause danger for probes. Another name for devil's sandstorms is the dust devil. 


There are different sizes of dust devils. Some of them are small tornadoes. Researching those things researchers can find. What is the dust devil's role in giant sandstorms that can cover almost the entire Mars planet? There is the possibility that the dust devils are acting like giant cylinders that put the atmosphere move between them. 


 Those giant sandstorms are covering almost half of planet Mars. The thing that makes those things dangerous is the friction of the dry sand. That thing forms static electricity. The duration of the sand devil determines how much static electricity it can create. If a long-term sand tornado hits the probe it can cause electric shock. But luckily the planet Mars' atmosphere is not very thick. 





But on Saturn's Titan moon, the devil's sandstorms are more dangerous. There the weak gravitation along with the thick atmosphere is making it possible that the sandstorms can exists longer. 


The devil's sandstorms are possible on Mars and Saturn's Titan where the atmosphere is thicker than on Mars. On Titan, the devil's sandstorms are more dangerous than on Mars. The reason for that is the higher gas pressure makes it possible that the speed of those sand bites can rise higher than on Mars. And those sandstorms are acting like abrasive blasts or large groups of fast-flying bullets. 


When we think about weak gravitation and life forms. We must realize one thing. The friction on the weak gravitation field is lower than in the strong gravitational field.


That means the speed of the gas is higher on those planets. And that thing causes friction where the gas can turn quite hot. There is also the possibility that devil's sandstorms are making that planet unable to host highly advanced civilizations because the sand tornados are causing so powerful electromagnetic phenomena. That electronics will jam on that planet. 






Above: Illustration of the interior of Saturn's moon Enceladus. 


Icy moons and lifeforms. 


Under the icy surface of icy moons is the ocean. But there are very high-speed flows in those oceans. 


The tidal forces are keeping those oceans in Europa and Enceladus. The planet's gravitation forms the flow of those icy moons' oceans. And that flow makes the friction and heat in oceans. 


The hypothetical lifeforms can use this temperature as an energy source. But those flows can also deny the forming of life forms. 


And if those flows in the deep oceans of the icy moons are high enough, that can destroy the complicated protein molecules that are necessary for life. Or those flows can make it impossible that cells can make chains. And those lifeforms are extremely primitive. 



https://www.nasa.gov/press-release/cassini-finds-global-ocean-in-saturns-moon-enceladus


https://www.nasa.gov/feature/jpl/dust-storms-on-titan-spotted-for-the-first-time



https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of-martian-dust-storms



https://scitechdaily.com/scientists-obtain-first-ever-sound-recording-of-dust-devils-on-mars/


https://skyandtelescope.org/astronomy-news/titan-dust-storms-challenge-future-spacecraft/



https://astronomyandtechnology.blogspot.com/

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