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There really are some veryyyyyyy strange worlds out there.

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Awakening & Redemption by Sapna Reddy Photography

Astronomy and Astrophysics: Facts

Here is a list of some curiosities of astronomy and astrophysics. From our solar system to interstellar space.

Phobos (moon)

Phobos is the innermost and larger of the two natural satellites of Mars, the other being Deimos.  Orbiting a mere 3,700 miles (6,000 kilometers) above the surface of Mars, Phobos is closer to its planet than any other moon in the solar system. Mars’ gravity is drawing in Phobos, the larger of its two moons, by about 6.6 feet (2 meters) every hundred years. Scientists expect the moon to be pulled apart in 30 to 50 million years.

10199 Chariklo

10199 Chariklo is the largest confirmed centaur (minor planet of the outer Solar System). It orbits the Sun between Saturn and Uranus, grazing the orbit of Uranus. On 26 March 2014, astronomers announced the discovery of two rings (nicknamed Oiapoque and Chuí), around Chariklo by observing a stellar occultation. making it the first known minor planet to have rings.

Brown Dwarfs

Brown dwarfs are objects which have a size between that of a giant planet like Jupiter and that of a small star. In fact, most astronomers would classify any object with between 15 times the mass of Jupiter and 75 times the mass of Jupiter to be a brown dwarf. Given that range of masses, the object would not have been able to sustain the fusion of hydrogen like a regular star; thus, many scientists have dubbed brown dwarfs as “failed stars”.

Halley’s Comet

Halley’s Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 74–79 years. Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061.

The distant Neptune

Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50×109 km). A day on Neptune is just 16 hours long.

Andromeda–Milky Way collision

The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4 billion years between the two largest galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.

UY Scuti

is a bright red supergiant and pulsating variable star in the constellation Scutum. It is a current and leading candidate for being the largest known star by radius and is also one of the most luminous of its kind. It has an estimated radius of 1,708 solar radii; thus a volume nearly 5 billion times that of the Sun. It is approximately 2.9 kiloparsecs (9,500 light-years) from Earth. If placed at the center of the Solar System, its photosphere would at least engulf the orbit of Jupiter.

Orion (constellation)

Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky. It was named after Orion, a hunter in Greek mythology. Its brightest stars are Rigel (Beta Orionis) and Betelgeuse (Alpha Orionis), a blue-white and a red supergiant, respectively.

Pillars of Creation

Pillars of Creation is a photograph taken by the Hubble Space Telescope of elephant trunks of interstellar gas and dust in the Eagle Nebula, some 6,500-7,000 light years from Earth. They are so named because the gas and dust are in the process of creating new stars, while also being eroded by the light from nearby stars that have recently formed

Black Hole vs Star

A star approaching too close to a massive black hole is torn apart by tidal forces, as shown in this artist’s rendering. Filaments containing much of the star’s mass fall toward the black hole. Eventually these gaseous filaments merge into a smooth, hot disc glowing brightly in X-rays. As the disk forms, it’s central region heats up tremendously, which drives a flow of material, called a wind, away from the disk.

Image credit: NASA/ JPL/Hubble /ESO/ W. Liller/ Oscar Malet/  Philip Park CC BY-SA 3.0/ Joseph Brimacombe

Source: Wikipedia & NASA (x, x, x, x, x, x, x, x, x, x)

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Few stars are visible such as the Andromeda galaxy. But the majority of the stars that you can observe with the naked eye are in this small area of the Milky Way.