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Incredible south pole aurora of Saturn

"the locals say that no matter what angle you see them from, the moon will always be in the fragment of sky between their antlers. whether this is true, I don't know, but the old gods can do things your gods can't."

the truth is out there

And the angel said, “DO NOT BE AFRAID.”

Blanet: A new class of planet that could form around black holes

The dust clouds around supermassive black holes are the perfect breeding ground for an exotic new type of planet.

Blanets are fundamentally similar to planets; they have enough mass to be rounded by their own gravity, but are not massive enough to start thermonuclear fusion, just like planets that orbit stars. In 2019, a team of astronomers and exoplanetologists showed that there is a safe zone around a supermassive black hole that could harbor thousands of blanets in orbit around it.

The generally agreed theory of planet formation is that it occurs in the protoplanetary disk of gas and dust around young stars. When dust particles collide, they stick together to form larger clumps that sweep up more dust as they orbit the star. Eventually, these clumps grow large enough to become planets.

A similar process should occur around supermassive black holes. These are surrounded by huge clouds of dust and gas that bear some similarities to the protoplanetary disks around young stars. As the cloud orbits the black hole, dust particles should collide and stick together forming larger clumps that eventually become blanets.

The scale of this process is vast compared to conventional planet formation. Supermassive black holes are huge, at least a hundred thousand times the mass of our Sun. But ice particles can only form where it is cool enough for volatile compounds to condense.

This turns out to be around 100 trillion kilometers from the black hole itself, in an orbit that takes about a million years to complete. Birthdays on blanets would be few and far between!

An important limitation is the relative velocity of the dust particles in the cloud. Slow moving particles can collide and stick together, but fast-moving ones would constantly break apart in high-speed collisions. Wada and co calculated that this critical velocity must be less than about 80 meters per second.

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Indonesian photographer guanarto song lined up with sacred mt merapi for the aquarids meteor shower and nailed this beauty on the night of May 27, 2021.

Video Clip SS2935432 (Supercell Thunderstorm, timelapse)

Timelapse footage of a Supercell thunderstorm with multiple lightning flashes. 

A supercell is a large rotating storm system that often produces heavy rain, hail and sometimes tornadoes. The supercell is centred on a very powerful updraft, which lifts warm, moist air to high altitude. It cools as it rises, condensing and falling as precipitation. 

The base of the cloud is marked by a shelf cloud extending forwards, and a low wall cloud at the updraft/downdraft interface. This supercell was filmed in Kansas, USA, in June 2015. Such storms are most common in this region in spring and early summer.

Supercells are often put into three classification types: Classic, Low-precipitation (LP), and High-precipitation (HP). LP supercells are usually found in climates that are more arid, such as the high plains of the United States, and HP supercells are most often found in moist climates. 

Supercells can occur anywhere in the world under the right pre-existing weather conditions, but they are most common in the Great Plains of the United States in an area known as Tornado Alley and in the Tornado Corridor of Argentina, Uruguay and southern Brazil.

© Roger Hill / Science Source

types of people: celestial bodies

stars: bright-eyed, lonely, smiling to hide the pain, dreamer, falling in love with music, overworking, makes others happy

comets: cold, secretly wants to hold hands, killer gaze, has trouble expressing their emotions, loves unconditionally

moons: soft, a little clingy, heart of gold, gives the best hugs, says sorry too often, pinky promises, gets excited easily

meteors: quiet, fleeting but beautiful smiles, a little insecure, has a way with words, friends are like family, selfless

asteroids: stubborn, loud, protective of their loved ones, doesn’t care, street smart, will fight you, probably wears rings

nebulae: soul of an artist, messy hair, loves children, vibrant, laughs loudly, sensitive, every color is their favorite color

Fallstreak Holes

Occasionally clouds appear to have a hole in them; these are known as fallstreak holes or hole-punch clouds. (Image credit: J. Stevens/NASA; via NASA Earth Observatory) Read the full article