Stars

Stars are gigantic spheres of nucleosynthesis. They start off as hydrogen mainly but gradually fill up with heavier elements as they synthesise them. Stars form from nebulae, vast clouds of hydrogen. Pockets of gas in the nebulae ball into spheres by gravity. Through tunnelling (relies on the Uncertainty Priciple of quantum theory), hydrogen nuclei fuse to form helium nuclei and this reaction gives of heat. Millions upon millions of these reactions heat up the star. Hydrogen is converted in this way (nucleosynthetically) into...

Answer "Aldorande" is the pronunciation of a star called Alderaan. Alderaan is the disused term for the stars Procyon and Gomesia in the constellation of Canis Minor. So, your answer is the Canis Minor constellation. Even though the name Alderaan is no longer used. Alderaan is also a fictional planet in the Star Wars movies. Answer Alderaan is pronounced Aldorande in the Star Wars movies and is a fictional planet. The star Alderaan is an old and disused term for the stars Procyon and Gomeisa in...

It takes millions of years for free floating diatomic molecules of hydrogen gas in space to congregate in sufficient quantity to produce a protostar (the first stage). The collapse of the gas usually requires some event, such as a collision between gaseous nebula which tend to be inelastic, or the shockwave from a supernova, or the wake of a black hole. Any of these events can nudge gravity to coalesce the gas into a "brown dwarf." When a brown dwarf has gained...

The circle of light around the sun is called a Corona. The corona can usually only be seen during a total solar eclipse. When this happens it can be seen as an irregularly shaped glow surrounding the moon. ...

Mainly, a high mass star has a very short lifetime, because it uses its fuel in a much more wasteful manner: due to its higher mass, it will get much hotter, and the fusion will occur much faster. ...

a massive star becomes red super giant which later results in a supernova explosion. after processes it either becomes a black hole or neutron star ...

The seasons are due to the motion of the Earth around the Sun. So, it may not be surprising that the Sun's position in the sky changes over seasons, due to the motion of the Earth around the Sun. The explanation is simple. All stars in the sky are moving, but the distant stars are so far away that we cannot detect appreciable motion (even when the Earth moves around the Sun). As a result, the positions of distant stars in...

Great question to chew on ! And I think I can work it out, at least to an order-of-magnitude approximation. Radius of Jupiter's orbit is around 5 AU = 5 x 93 million = 465,000,000 miles. 15 light years = 15 x 5.8787 x 1012 = 8.818 x 1013 miles (Tangent)-1 of (5 AU / 15 LY) = 0.000302 degree = roughly like 1.09 arc-second. There's a rule for the resolution you need in order to completely resolve two sources that subtend a given angle,...

The brightest star seen from Earth, aside from the Sun, is Sirius A. The Sun, of course, is nowhere near the largest star we can see. It only appears big to us because it is so much closer than any other star. Comment: That's not the answer to the question, of course. Even in big telescopes, all stars seem just like points of light from Earth. Perhaps the questioner meant the star we believe is the biggest, of those we can...

Stars, planets, moons, and various other bodies in space are collectively called celestial bodies. The stars, like the sun, appear to move from east to west. This apparent movement is due to Earth's rotation on its axis. However, there is one star that appears almost stationary to us. This is the Pole star, named so because it is in the direction of the North Pole. All the stars appear to rotate about a point very close to the Pole star, which appears...

According to relativity theory: from an observer's viewpoint it takes about 8 minutes. From the light's viewpoint it takes no time at all. (That's pushing the theory to the limit of course.) There's a lot of detailed stuff below, but that's basically the answer. Very Basic Answer: Because the time dilation explained by relativity affects the object (or light) traveling at relativistic speeds, and NOT observers watching the object (or light) go by. A Little More Information: Here is the reason this is so difficult to grasp. Time...

Heat from nuclear fusion produces massive amounts of energy. Thermal energy is usually associated with Light. The concept of heat creating light is the same basis as to why light bulbs get hot when you turn them on, or why metal gets bright red when you heat it up. ...

"Antares" is probably the largest star visible with the naked eye. However, the largest star may be "VY Canis Majoris" which is about twice as big as Antares, but is not visible with the naked eye. Estimating the radius of a star is not easy and there are a few other possible answers as to what the biggest star actually is. See related questions. ...

It would quarter. If the distance to a star is doubled, its apparent intensity or brightness would be reduced to one quarter (1/4) that of its original intensity. ...

Astronomers.

That object is easily visible with a pair of binoculars. A star's apparent brightness is exactly 100 times less than another star if its apparent magnitude is +5 greater. So, the star of magnitude 7.3 appears 100 times fainter than a star of magnitude 2.3. (Polaris is a bit brighter than magnitude 2.3). ...

Thermonuclear fusion reactions produce an outward pressure that counteracts the inward pressure that would lead to collapse due to gravity. True, but not only! Equilibrium of gravitating bodies (stars, planets, nebula...) depends on state equation: pressure as a function of mass density, temperature. Radiative pressure is important for hot normal star sclasses, but not for dense neutron stars or dwarfs... Particularly, there is not radiation pressure in planets, which are keeping by the balance of gas/liquid pressure and gravitation... ...

There are many, many stars that are at approximately that distance.

Sure it shines. We simply don't see it when it is below the horizon.

No, it is a red supergiant star.

Neither. It is actually a star. Its true name is Polaris, just as the true name of the sun is Sol. It is nicknamed the North Star because it is the only star that appears not to move in the sky, because its position is directly over the North Pole. ...

In physical terms - to the ends of the Universe. In practical terms - to the edge, where something more massive has a greater influence. In "our" terms, about 2 light years from the Sun (But all depends in which direction you are looking (thinking). ...

Its between 500 to 790 light years away, but it has been proven difficult to measure. 644 light years is the approximation. ...

ബുധന്‍ = mercury ശുക്രന്‍ = venus ഭൂമി = earth ചൊവ്വ = mars വ്യാഴം = jupiter ശനി = saturn ഇന്ദ്രന്‍ = yuranus വരുണന്‍ = neptune ...

NO. Defiantly not. It means it gives us light and energy. What kind of question is this. You are weird not to know this. ...