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Comets highly resemble asteroids ☄️
Still, there are a few differences, they contain more ice, methane, ammonia, and other compounds.
They develop fuzzy, cloud-like shells called comas. And also form a tail as they fly closer to the Sun.
Still, there are a few differences, they contain more ice, methane, ammonia, and other compounds.
They develop fuzzy, cloud-like shells called comas. And also form a tail as they fly closer to the Sun.
"Cosmic Hand Hitting a Wall."
So called the giant object captured at the Chandra Observatory✨
Such a cosmic structure was captured and measured for the first time using the X-ray observatory. Astronomers estimate that the light from the supernova explosion reached Earth about 1,700 years ago. The image actually captures the resulting supernova remnant, called MSH 15-52.
So called the giant object captured at the Chandra Observatory✨
Such a cosmic structure was captured and measured for the first time using the X-ray observatory. Astronomers estimate that the light from the supernova explosion reached Earth about 1,700 years ago. The image actually captures the resulting supernova remnant, called MSH 15-52.
What threats will humanity face when exploring deep space? 🧑🏼🚀
Among the main real dangers are space vacuum, space radiation, weightlessness and lunar dust (if we take into account lunar exploration).
The most dangerous of these should be considered space radiation. It includes electromagnetic radiation and high-energy charged particles, primarily protons.
Among the main real dangers are space vacuum, space radiation, weightlessness and lunar dust (if we take into account lunar exploration).
The most dangerous of these should be considered space radiation. It includes electromagnetic radiation and high-energy charged particles, primarily protons.
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The size of the red giant Betelgeuse
The white ball in the animation is the Sun, the 8 planets orbiting it are shown next, and the red giant is the star Betelgeuse.
The white ball in the animation is the Sun, the 8 planets orbiting it are shown next, and the red giant is the star Betelgeuse.
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Timelapse of the vast northern lights
Such an amazing phenomenon was filmed by French astronaut Thomas Pesquet.
📌 The northern lights are the luminescence of the upper atmospheres of planets possessing a magnetosphere (their interaction with charged particles of the solar wind occurs).
Such an amazing phenomenon was filmed by French astronaut Thomas Pesquet.
📌 The northern lights are the luminescence of the upper atmospheres of planets possessing a magnetosphere (their interaction with charged particles of the solar wind occurs).
Oumuamua is misleading scientists again
Experts doubt it could be a "nitrogen iceberg"🤷🏻
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The Oumuamua space object is the subject of heated debate among astronomers. Some suggest it's part of exo-Pluto, others that it's a giant asteroid sent by another civilization. And a new study suggests that Oumuamua definitely cannot be a nitrogen iceberg.
Experts doubt it could be a "nitrogen iceberg"🤷🏻
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The Oumuamua space object is the subject of heated debate among astronomers. Some suggest it's part of exo-Pluto, others that it's a giant asteroid sent by another civilization. And a new study suggests that Oumuamua definitely cannot be a nitrogen iceberg.
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Galaxy R5519 shaped like a ring, surrounded by a scattered halo
A void with a diameter of 30 thousand light years (about a third of the Milky Way's diameter) lies in its center.
As a result, the radius of the ring galaxy is 1.5-2.2 times larger than that of the Milky Way, with almost the same mass.
A void with a diameter of 30 thousand light years (about a third of the Milky Way's diameter) lies in its center.
As a result, the radius of the ring galaxy is 1.5-2.2 times larger than that of the Milky Way, with almost the same mass.
Muonionalusta is a meteorite found in 1906 on the border of Sweden and Finland.
According to research, the meteorite fell about a million years ago and has since survived four ice ages. But the age of this cosmic body is much older.😱
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The meteorite belongs to the iron meteorites. In addition to iron, it contains nickel, gallium, germanium and iridium. This composition is typical for the nuclei of nascent planets and large asteroids.
According to research, the meteorite fell about a million years ago and has since survived four ice ages. But the age of this cosmic body is much older.😱
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The meteorite belongs to the iron meteorites. In addition to iron, it contains nickel, gallium, germanium and iridium. This composition is typical for the nuclei of nascent planets and large asteroids.
From a protostar to a nebula
Every star follows a complex evolutionary path over millions and billions of years of existence. It is born from a protostar in a "stellar cradle," when thermonuclear reactions begin in its interior.
The process of birth of small stars like our sun takes several tens of millions of years. The life of such a star lasts for another few tens of billions of years.
In the final stage, when the fuel in the core comes to an end, the small star turns into a red giant. After a long period of relatively calm expulsion of matter from the surface, it drops the envelope. That shell becomes a planetary nebula, and the core of the star becomes a white dwarf.
📌The photo illustrates a collage of 100 planetary nebulae.
Every star follows a complex evolutionary path over millions and billions of years of existence. It is born from a protostar in a "stellar cradle," when thermonuclear reactions begin in its interior.
The process of birth of small stars like our sun takes several tens of millions of years. The life of such a star lasts for another few tens of billions of years.
In the final stage, when the fuel in the core comes to an end, the small star turns into a red giant. After a long period of relatively calm expulsion of matter from the surface, it drops the envelope. That shell becomes a planetary nebula, and the core of the star becomes a white dwarf.
📌The photo illustrates a collage of 100 planetary nebulae.
Vagabonds in Space
In the endless expanse of the Universe, orphan planets, a.k.a. tramps, or alien planets, fly in the darkness and silence. Once many of them had their own star. But these planets have gone out of orbit and now wander in space in sad loneliness.
✔️In spite of their seeming elusiveness, astronomers have been able to locate several distant planets thanks to the method of gravitational microlensing.
In September 2020, the first Earth-mass orphan planet, OGLE-2016-BLG-1928, was discovered in the Milky Way Galaxy, unconnected to any star.
In the endless expanse of the Universe, orphan planets, a.k.a. tramps, or alien planets, fly in the darkness and silence. Once many of them had their own star. But these planets have gone out of orbit and now wander in space in sad loneliness.
✔️In spite of their seeming elusiveness, astronomers have been able to locate several distant planets thanks to the method of gravitational microlensing.
In September 2020, the first Earth-mass orphan planet, OGLE-2016-BLG-1928, was discovered in the Milky Way Galaxy, unconnected to any star.
May one have a cat on the ISS?
Domestic animals on the ISS are an unacceptable luxury. They need oxygen, water, food, sanitary conditions. Moreover, the issue of fur flying everywhere will be very acute.
The poor animal will face a lot of trouble in space. Cats have well-developed vestibular apparatus, so that in microgravity conditions the tail will twist and turn like a whirligigig.
*The first cat in outer space is pictured here.
Domestic animals on the ISS are an unacceptable luxury. They need oxygen, water, food, sanitary conditions. Moreover, the issue of fur flying everywhere will be very acute.
The poor animal will face a lot of trouble in space. Cats have well-developed vestibular apparatus, so that in microgravity conditions the tail will twist and turn like a whirligigig.
*The first cat in outer space is pictured here.
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A cosmic object with a mass of 66 billion solar masses!
It seems unbelievable, but such an object does exist - in the constellation of the Hound Dogs. This object is a heavy supermassive black hole, which is the center of the quasar TON 618.
Luminosity of the quasar is 140 trillion times more than the solar! It is one of the brightest objects in the known universe. But we cannot see it through the telescope with our eyes anyway - the quasar is 10.5 billion light years away from us.
It seems unbelievable, but such an object does exist - in the constellation of the Hound Dogs. This object is a heavy supermassive black hole, which is the center of the quasar TON 618.
Luminosity of the quasar is 140 trillion times more than the solar! It is one of the brightest objects in the known universe. But we cannot see it through the telescope with our eyes anyway - the quasar is 10.5 billion light years away from us.
Do all spiral galaxies have a black hole in the middle?
Nobody knows this for sure, but it is likely that most spiral galaxies contain a supermassive black hole, and sometimes more than one.
There are two reasons for our uncertainty. First, we physically cannot survey all spiral galaxies in the Universe.
Second, theoretically, galaxies are not obliged to have a black hole at their center - their stars will be held together as it is.
Likewise, there is clear evidence that black holes may have been very important, if not obligatory, for the formation of galaxies in the early Universe. In that case not only in the middle of spiral galaxies, but also in all other galaxies there could be compact supermassive objects.
Nobody knows this for sure, but it is likely that most spiral galaxies contain a supermassive black hole, and sometimes more than one.
There are two reasons for our uncertainty. First, we physically cannot survey all spiral galaxies in the Universe.
Second, theoretically, galaxies are not obliged to have a black hole at their center - their stars will be held together as it is.
Likewise, there is clear evidence that black holes may have been very important, if not obligatory, for the formation of galaxies in the early Universe. In that case not only in the middle of spiral galaxies, but also in all other galaxies there could be compact supermassive objects.