Astrophysics

Rotation is when something goes round an external axis, revolution is when something rotates about an internal axis (think of a revolver), retrograde motion comes about because all the planets rotate around the Sun and sometimes when we overtake an outer planet it appears to go backwards along the ecliptic for a while, like another car when you overtake it.

Just about everything, including the air to breathe.

What I would do is just try and calm down. Take a deep breath. I know it's exhilarating but just try to remember that he's just a person as well. Be calm and try to calmly respond unless that makes you blush even more. Try and think calming thoughts, you don't want to look like a fool in front of your crush if you're just blushing all the time you're around them. Be calm, talk to them, and try to start a relationship of friendship. You'll know if you're ready to go from friendship to dating.

I know I sound like a broken record, but the most important thing is just to stay calm.

That means that the Universe expands faster and faster. It causes the Universe to grow, and the general density of matter in the Universe to decrease over time.

Assuming that the question refers not to a falled (??) star but to a failed star, the answer is that it is a star that does not have enough mass for hydrogen fusion to be sustain. Such stars are also known as brown dwarf stars.

Assuming that the question refers not to a falled (??) star but to a failed star, the answer is that it is a star that does not have enough mass for hydrogen fusion to be sustain. Such stars are also known as brown dwarf stars.

Assuming that the question refers not to a falled (??) star but to a failed star, the answer is that it is a star that does not have enough mass for hydrogen fusion to be sustain. Such stars are also known as brown dwarf stars.

Assuming that the question refers not to a falled (??) star but to a failed star, the answer is that it is a star that does not have enough mass for hydrogen fusion to be sustain. Such stars are also known as brown dwarf stars.

Black holes are strange because we can't study them properly.

If it had half the present distance from the Sun, then it WON'T have the same orbital speed - it will move faster (unless the Sun's mass decreases). Use Kepler's Third Law to do the calculations.

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The accuracy of the above notwithstanding, the questioner may be asking about the effect of one half the distance, disregarding for this question any impossible or catastrophic results. All things being equal, and also disregarding the slight eccentricity of earth's orbit, one half the distance from the sun would result in an orbit (circumference) of one half the length. Moving at the same orbital speed [which we know could not actually be the case] would create a year of one half the absolute length of a current year. So there would be roughly 182.6282 days per year.

Yeah if you liked sex

There is currently no concrete evidence to suggest that there are aliens on other planets. Scientists continue to search for signs of extraterrestrial life, but as of now, we do not have conclusive proof of aliens elsewhere in our galaxy or universe.

With the controlling agency''s authorization.

Once a star has become either a black hole or a white dwarf, then nothing further can happen to them. That's the end of their "life" or "history" or "progress" or whatever word you want to use.

If the radius is larger, the surface will also be larger. As a functional dependency, you only need one - the radius, or the surface - whatever.

The concept of black hole explosions is hypothetical at best and sensationally overrated. The introduction of black hole explosion, promoted by Stephen Hawking and John Wheeler, is basically the calculated event of a dramatic increase in the rate of Hawking emissions upon the onset of black hole death. It would be like a pressure build up in a boiler, except the container is initially able to withstand the bursting event. The notion of black hole death is that eventually the dramatic increase in the rate of Hawking radiation emission reduced the mass of the black hole, and the black hole's energy would evaporate. However, the calculated evaporation time for this type of black hole death is much longer than the current age of the universe at 13.73 ± 0.12 x 109 years.

The Bolshoi Cosmological Simulation was a large-scale simulation of the evolution of the Universe.

The effects of all massive objects on spacetime would be similar, the degree of effect being largely determined by the mass of the object since the latter would dictate the strength of the gravitational field it generates. In the case of the most massive black holes, the supermassive ones identified in many galactic nuclei, the effects would be greatest.

The nature of the effect itself could be most adequately described by the general theory of relativity; which states that gravitational fields affect the local curvature of spacetime; the greater the mass, the greater the curvature. Effects predicted by general relativity have been proven experimentally including redshifting, time dilation, and gravitational lensing. Oft-quoted thought experiments are cited in which, if a distant observer were able to see for example a clock being thrown into a supermassive black hole, the observer would note light from the clock becoming dimmer and redder, and the clock itself would appear to run more and more slowly as it approached the event horizon, at which point time would seem to a distant observer to have stopped entirely.

Sxg

peak A+

There is no other side.Universe itself carrying its uncountable amount of stars,planets,nebulafs,matters,space,blackholes etcs is ever expanding since the time of bigbang.This expansion might continue to a limitless account creating more space until the most individual particles like protons & neutrons separates from each other and the universe will finally slffp into the total darkness.The dead end.

According to Einstein's theory of general relativity, objects with mass "bend" space-time, which is part of how gravity works. (Space-time is basically the combination of space at time, using time as a kind of "fourth dimension".)

When objects move around, they change the way the space-time is curved around them. In some cases, when an object accelerates, the result changes in the curvature of space-time propagate outwards at the speed of light. The propagation of the changes in the curvature of space-time is what is known as gravitational waves.

The idea of a hole in the space time continuum sounds a bit like something out of Star Trek - but there are objects in astrophysics, both real and theoretical, which might match the description of a hole and which affect spacetime; such as a black hole, white hole, or wormhole. Black holes are shown mathematically to stretch the fabric of spacetime, causing length contraction or time dlation in accordance with Einstein's special and general theories of relativity. In this context, the term 'hole,' while notionally an entirely appropriate metaphor including the very real inescapability if you fell in, might be better interpreted as a 'severe stretch' as if space itself were infintely elastic rather than an actual break or gap in spacetime. White holes, which have not yet been observed, are also a consequence of Einstein's field equations from relativity theory and answer to a description somewhat opposite that of black holes, being a region of spacetime from which light and matter could escape, but nothing could enter, its event horizon being unreachable. The wormhole, also known as an Einstein-Rosen bridge, is a theoretical entity which could connect two distant points in spacetime somewhat like a tunnel - such that if you could travel through it, you might find yourself in another place in the universe or another universe entirely.

Generally, a LAN's distance includes only several hundred yards

A "star" must produce energy via fusion.

This is a nuclear reaction in which nuclei (usually hydrogen) ram together at a high enough speed to form a nucleus with more protons than either of the original nuclei. For instance, a proton/neutron nucleus might smash into another proton/neutron nucleus and forming a nucleus of two protons and two neutrons.

This reaction can only be self-sustaining if there is enough energy during the reaction to end up as heat in other nuclei, which then blast into other nuclei and cause more fusion reactions. Because of that, there must be a fairly dense amount of fusionable material at a high temperature in order for a star to form.

The minimum temperature needed to permit fusion is about 8 million degrees Kelvin. Minimum densities would have to be about 10^15 particles per cubic centimeter, on the order of atmospheric pressure.

All of them.

The energy released by fusion in the core of a star produces an outward pressured force that counteracts gravity. When fusion stops, that force goes away and gravity takes hold, causing the core to collapse.