Astrophysics

A black hole can attract and consume matter and light due to its strong gravitational pull. It can also emit radiation known as Hawking radiation, and potentially merge with other black holes to form larger ones.

Humans breath to provide oxygen to the cells throughout the human body. Cells need food and oxygen and in return produces heat, CO2, and energy. Therefore, humans need to breathe in order to "feed" their cells, as well as to get energy to power their body.

Our Sun is mostly surrounded by space; but planets in the solar system do orbit the Sun (or more correctly, a common center of gravity near the Sun), so in a loose sense planets are around the Sun or move around it.

This depends on what you mean by Ice and Cap. If you want an answer that covers ONLY H2O (water) then only the earth fits that definition. Otherwise ALL non Jovian (Gas Giant) planets in orbits past Earth from the Sun are cold enough to have frozen gas and liquid on their surfaces, even at the poles. And all of them do. Some like Neptune ( and some moons) may be completely covered.

Although this is comparing an event to a massive body, for convenience a comparison could be made using the common currency of energy. The most powerful gamma ray burst ever recorded, detected by the Fermi gamma ray space telescope in 2008, was a little less strong than six thousand supernovae, about 9 x 10^47 joules of energy. If you turned that into mass, per Einstein's famous formula E = m c^2, you'd have about 5 times the Sun's mass expressed as energy - and although not as sudden and intense as some bursts, it lasted unusually long. By comparison, the most massive known black hole (that of quasar APM 08279+5255) is about 23 billion times the mass of the Sun - so if that were converted into energy it would be a bit under five billion times as much as the biggest known burst and one would be compelled to conclude there is more 'strength' in a black hole when these extreme examples are compared.

Other approaches might yield different conclusions; because gamma bursts are transient events it is certain there have been instances of significantly greater power than recorded to date; one might also consider whether the relativistic jet (and accretion disk) of the above quasar yields more electromagnetic radiation per unit time (or otherwise, total binding energy, or work done per unit time by the black hole) than the burst to which it is being compared, which might bring into question whether it is notionally "brighter".

A method: the uranium mineral is grounded, solved in nitric acid or a basic solvent, uranium is after extracted with ion-exchangers as impure uranyl nitrate, the solution of uranyl nitrate is refined by solvent extraction (with tri-n-butylphosphate in kerosene), the uranium is precipitated as ammonium diuranate (the yellow cake or ADU), this salt is calcined in air to triuraniumoctaoxide U3O8. The oxide U3O8 is then reduced with hydrogen at about 700 0C to uranium dioxide UO2.

The gravitational force of the sun is strongest for the reason that the sun is the most massive. Gravitational force is proportional to mass; the higher the mass, the stronger the gravity.

The sun has over a thousand times the mass of the next most massive object in the solar system (Jupiter).

Both are the remainders of stars, that is dead - that no longer produce energy. A third type of "dead star" is the white dwarf. What becomes of the star after it dies - a white dwarf, a neutron star, or a black hole - depends on its mass.

This is because of the motion of the Earth, remembering that the Earth orbits around the Sun - so basically the "background" of stars behind the sun changes as the Earth's angle to the Sun goes a full circle. Meanwhile the Sun remains relatively still.

Currently, there is no evidence that it does exist, however, a lot of astronomers believe it does. A lot of astronomers have seen it but can't quite find any solid evidence that it does. To sum it up in a nutshell, it's basically innocent until proven guilty per se.

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"Black matter" could be black paint. Perhaps you are referring to "dark matter"?

There's a problem in the Milky Way; it doesn't fly apart. The Milky Way is rotating, and it is rotating so quickly - one rotation every 220 million years or so - that it would take a LOT of mass to generate enough gravity to keep it together. We can't see enough matter to hold the galaxy together!

So either our fundamental theories of gravity are wrong - and they generally seem to work OK - or there is mass in the galaxy that we cannot see. If the mass were in the form of stars or nebulae, we would be able to see it. So the matter - if it exists - is "dark", and not easily detectable. Perhaps the supermassive black hole at the center of the galaxy is WAY bigger than we think. Perhaps there is some other force in the galaxy that we don't know about yet. And perhaps there is some kind of invisible, or indetectable, or "dark" matter. Or perhaps there s some sort of super-gravity that we don't know of yet, some sort of "dark energy". Or maybe it's just The Force, that Binds the Galaxy Together.

Ever since Ugghhh the Caveman came down from the trees and started carrying a club, men have "made up" explanations for things that we didn't understand. This is where superstitions come from, and fables, and stories about the gods and heroes who climbed up into the heavens to shine down on us as constellations. So far, "dark matter" and "dark energy" are in that same realm; interesting concepts with precisely ZERO evidence.

Keep an open mind; the reason why the galaxy isn't flying apart may be any of the explanations above, or all of them, or something else that we haven't thought about yet.

I'll quote another science fiction character: Commander Data of Star Trek said "The beginning of wisdom is the ability to say 'I do not know'". Maybe it isn't fiction!

None of the eight planets in the solar system has a retrograde orbit. However, two, Venus and Uranus, have retrograde rotation around their axes. As to whether any exoplanet has a retrograde orbit or not, that is unknown since there is little or no knowledge of their rotation.

As a cosmic traveler, you would journey through the vast reaches of outer space, exploring distant planets, stars, and galaxies. Your path could lead you to surreal landscapes, encounter alien life forms, and witness cosmic phenomena such as supernovae and black holes. It would be a journey of endless discovery and wonder.

If by "interesting sight", you mean is there anything interesting to look at if you're on Pluto looking out, probably not. The sun would look like a very bright star, and you would see the heavens pretty much the same as you would from Earth. If you mean, "is there anything interesting to look at on Pluto", it's an icy rock, so probably not.

Tinyopenings on underside ofleaves

Maledil is a representation of a higher divine being in the universe of C.S. Lewis's novel "Out of the Silent Planet." Maledil is seen as the ultimate source of love and justice in the story, guiding and maintaining balance in the cosmos.

Mercury is considered the driest planet in our solar system. Its thin atmosphere and proximity to the Sun make it extremely hot, causing any water present to evaporate quickly.

Both Venus and Uranus rotate counter-clockwise while still orbiting the sun clockwise. Which ones are clockwise and which are counter-clockwise depends upon whether you are looking looking at the sun, and planets, from the north or south pole.

A 5-point star within a circle is a symbol known as a pentagram. It is used to represent the five core elements of Earth, Air, Fire, Water, and Spirit. In the Wiccan religion, the pentagram is used as a talisman to protect the person that beholds it.

Aries is ruled by the planet Mars in astrology. Mars is associated with energy, action, aggression, and assertion. It represents drive, passion, and the desire to pursue one's goals with determination and courage.

Venus is the terrestrial planet that is permanently covered in clouds. Its thick atmosphere is composed mainly of carbon dioxide with clouds of sulfuric acid, which create a dense layer that obscures the planet's surface from view.

Planets not orbiting a star but instead orbiting the galactic center are referred to as rogue planets, or nomadic or interstellar planets.

Planets can be identified based on their unique characteristics such as size, composition, distance from the sun, and orbital patterns. Observing factors like surface features, presence of rings, and moons can also help differentiate between planets. Additionally, using tools like telescopes and astronomical charts can aid in distinguishing one planet from another.

The derivation of the equation needed to answer your question is a bit intense, so I'm going to skip it and just write down the result:

∆tE/√[1 - (3GMi/ri)/c2 - v2/c2] = ∆tM.

∆tE is the elapsed time of an atomic clock on Earth.

∆tM is the elapsed time of an atomic clock on the Moon.

G is the gravitational constant = 6.67428 X 10-11 m3/(kg s2)

c is the speed of light in a vacuum = 299,792,458 m/s

v is the average orbital speed of the Moon = 1022 m/s

Mi and ri are the sums of the masses and radial distances, respectively, of all of the objects with a gravitational influence on the moon. In this answer, I'm going to approximate these two values by only considering the masses and radial distances for the Earth, the Moon, and the Sun. Because of this approximation, the value for ∆tM that I'm going to list below will a bit lower than the actual value.

So, after plugging in all of the numbers into the above equation, with ∆tE = 4 billion years, the value for ∆tM is 4000000059.5 years. So the atomic clocks would be about 59.5 years apart.

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Scientists have yet to discover any planets with confirmed life beyond Earth. However, some of the closest potentially habitable exoplanets include Proxima Centauri b, TRAPPIST-1e, and Ross 128 b. These exoplanets are all within a few dozen light-years of Earth.