Astrophysics

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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thats all i can really think of

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.

The name of the fraction of light reflected off a celestial object is its albedo. The moon has an albedo of around 0.12 which is to say about 12% of the light that falls on it gets reflected (some sources say as low as 7%) - meaning it's pretty dark. Enceladus, a moon of Saturn, has an albedo of about 0.99.

Exposure to radiation in the ultraviolet region is the most common way of causing fluorescence, but not the only way. Exposure to enough radiation for one electron to absorb two photons can cause fluorescence.

No, astronomers have not physically gone out of the solar system. They study space and celestial bodies using telescopes and spacecraft like Voyager 1, which has reached interstellar space but is still within the boundaries of our solar system. Astronomers rely on these tools to explore the universe beyond our solar system.

As of now, astronomers have identified supermassive black holes in the centers of most galaxies, including our own Milky Way. Estimates suggest there are around one billion supermassive black holes in the observable universe. These black holes are millions to billions of times more massive than our Sun.

The largest shield volcano observed in the solar system is on Mars and is called Olympus Mons. It is located on the Tharsis volcanic plateau near the Martian equator. Olympus Mons is about 13.6 miles (22 kilometers) high, making it the tallest volcano in the solar system.

Because its current planetary conditions do not permit life to be sustained or even develop.

In its present state, Venus has no water, no free oxygen, and a very dense atmosphere of carbon dioxide and sulfuric acid. The atmosphere traps solar heat and makes Venus the hottest of the terrestrial planets. Its average surface temperature is about 460°C (860°F).

Charged particles from outer space are more likely to strike Earth at the poles due to the Earth's magnetic field shaping their paths. The magnetic field lines converge at the magnetic poles, directing charged particles towards these regions. This results in a higher concentration of cosmic ray impacts at the poles compared to the equator.

I've heard about this before, it was very common hundreds of years ago, we believe they did it to relieve headaches, they thought the pressure of the blood was causing the pain, we've examined the skulls and noticed they healed over, meaning the people lived through this.

I have heard about one man who was working on a rail site when he used a little too much thermite to fix the tracks and it exploded, a pole went through his head, he survived but his personality rapidly changed.