Astronomy
The scientific study of celestial bodies. Find questions on Constellations, Planets and more.
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Within each shadow . . . The UMBRA is the region from which none of the sun is visible. The PENUMBRA is the region from which...
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No. One stellar magnitude corresponds to a brightness ratio of about 2.512** . A 3rd magnitude star is about 2.512 times as...
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A sunspot is a dark spot on the sun.The number of sunspots changes in cycles of about 11 years.sometimes there are many, and...
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A is astronomy.B is Big Dipper.C is crater.D is dark matter or dark energy.E is eclipse.F is full moon.G is galaxy.H is...
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The question is somewhat ambiguous. It could be asking either one of two different questions. Here are the answers to...
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The sun rises in the east and sets in the west, as seen from each and every point on earth, with two exceptions: East and west...
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It is called a sunspot.
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-- When you let go of anything, it falls to the floor. -- When you step on the scale, you read the magnitude of the force that...
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365.24 earth days. Astronomers and Physicists refer to this time interval as the "year".
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The Earth's rotation causes night and day to occur around the world. If it were not for the rotation, it would be night in one...
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It is presumed to be mainly methane and possibly ethane
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Because it is in the way of the sun's light thus casting a shadow. If you pretend you are the Earth then stand outside in...
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Many Christians accept the scientific evidence that the solar system was formed from material thrown out by an exploding...
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List of Instruments used in the Outer SpaceTelescopes: The oldest instrument which is used in space exploration may be the...
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Because airplanes depend on the lift generated by the airflow across their wings, and they use air (and fuel) to power their...
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You need to make you question more clear. To another contributor, it's crystal clear, and he offers this method of procedure: ...
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The LMC and the SMC (Large and Small Magellanic Clouds) are named afterFernão de Magalhães, better known as Ferdinand Magellan....
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Friction. Meteors enter the atmosphere at phenomenal speeds, and the friction of the great speed through the atmosphere causes...
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If it has been 13 billion years since fusion reactions first ignited in the sun to produce visible light, then that light has...
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Twelve or thirteen, depending on the year.
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Every day, the Earth is struck by thousands and thousands of meteors. Most of them are tiny; the size of a grain of rice or...
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Light will be the least of your troubles. Long before you are anywhere close to standing on the sun you will be toast. ...
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the light from the sun takes 81/2 minutes to reach earth(=1a.u.). Light travels 186,000 miles per second. 510 seconds times...
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A meteorite.
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The math demanded it. His calculations actually required additional dimension, past the 4th. Somebody check me on this: He needed...
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The path can be two things which might be under question. In cosmology in general, planets follow circular-like paths round other...
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Yes, slightly. It reaches its perihelion (closest point) on 3 January and its aphelion (farthest point) on 4 July.
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Whilst studying in Graz, Austria, Kepler was an assistant to Tycho Brahe.
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the left half of the moon is illuminated side is decreasing
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The earth tilts on its axis, which is an imaginary pole from the north to south poles, around which the earth rotates. As the...
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the moon is 1/6th the earths gravity so 6 goes into 104 ... 17.33 so if u r using an earths scale - you would weigh 17.33 lbs
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Possibly an aircraft. Aircraft will have a red right of way light on the left or port side, and a green right of way light on the...
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Because the Moon does not have enough mass - i.e gravity, to hold onto an atmosphere. This can also be seen on Mars, where a...
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Gravitational pull of sun makes the planets orbit it.Also, centripetal force acts in opposite direction of centrifugal...
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Almost none. The force of gravity decreases by the square of the distance. The Earth's radius is about 4,000 miles. The Moon's...
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All planets follow elliptical orbits. Kepler's laws of planetary motion tell us that the planets are moving faster when they are...
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If the Earth were 100% oxygen, then there would not be enough gravity to hold it together; all the oxygen would be blown into...
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365.25 days
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Before the earth was formed, there was a lot of dust masses rotating around a bigger mass which was in the center. Dust masses...
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Planets have moons, comets do not.
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Polaris has a spectral type of F7 meaning it has a temperature of 6,000 -> 7,500 Kelvin and has a apparent colour of white
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Estimates place the speed of rotation around the Galaxy at approximately 230 kilometers a second. This means the solar system...
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See related link for a calculator depending on your location
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It is impossible to predict when a new comet will be discovered. While we know of a number of periodic comets, the majority of...
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The reason earth experiences high as well as low tides is due to the position of the moon and as the moon moves the tides change.
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It has a larger mass, thus larger gravitational pull. All objects would naturally try to move in a straight line, and is then...
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Well when it's winter in the northernhemisphere (united states, Asia, Europe any place north of the equator) the earth is tilted...
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46.5 billion light-years If you want to have a clear Idea of just how big it is go check out the link...
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Naturally, the shortest distance between two points is a curved line due to gravity etc, and the latter shaping the universe, and...
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-- You would see the sun rise and set once a year. -- The sun would rise in the west, cross the sky really slowly, and set in...
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Photons or Light given off by stellar objects Normally they detect the intensity of this light (Digital Cameras count the...
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1 magnitude is defined as a factor of [100]1/6 . (11.5 - 1.5) = 10 magnitudes = [100]10/6 = 2,154.4 times as bright (rounded)
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There is a full moon every month and, rarely, there may be two in a given month.
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The constelation known as the Big Dipper in USA or Ursa Major (to give it's correct name) is a collection of 7 Stars and is one...
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Yes. Gravity always acts in a matched pair of forces. The gravitational force that pulls you to the earth is what you weigh on...
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Earth rotates around it's own axis in 24 hours, and around the sun in 365 1/4 days.
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Probably not. It is currently unknown exactly what dark matter is, but theories claim that it may comprise up to 90 percent of...
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No. Our solar system is about 2/3 of the way out one of the spiral arms of our galaxy, a LONG way from the center. Considering...
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The really bright one? Probably Jupiter, depending on your location. I live near Sacramento, CA, and Jupiter is in the southeast...
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The 900 perpendicular rays of the sun hit at four distinct line on 4 days of the year. March 21 is the Vernal Equinox. The sun...
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Aurora Australis
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Since the moon's orbit is not exactly circular, and the gravitational attraction of the sun is quite strong around here, the...
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Edwin Hubble died in 1953. Most of his famous work was done at the Mount Wilson Observatory near Pasadena, CA.
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19.9 grams
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See related link for the Northern hemisphere
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Large Binocular Telescope (LBT)11.9 m
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Jupiter is the largest planet and also has the greatest density.
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A neutron star is the remains of a massive star that has ended it's life. There are many neutron stars and cannot have a...
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the other name for galaxy is milky way
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DX generation
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Because it is very important.
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the earth is millions of years old no scientist figured it out yet!!!!!
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If there were no sun, then there would be no sun. This statement is true.
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One. That is the definition of a rotation. Once around it's axis. See related question for the periods
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The sailors who named most of the southern hemisphere constellations looked up and imagined shapes in the stars; and since they...
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Most ancient civilisations (Including Greece - the forefront of astronomy) - believed in the geocentric model
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There are many ways of dividing up the solar system into three parts. 1. The Sun. 2. Jupiter 3. Everything else The Sun...
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there are hundreds, my quess would be 750.
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The measurement suggest that the Universe in the beginning was quite dense and hot (around 3,000 Kelvin), having now a...
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Erastosthes was the first person to attempt to figure out the size of the earth, and although he was not exact, he was very close...
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The Sun will very likely continue pretty much as it is today for the next few billion years.
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If a satellite is in geosynchronous orbit, it will take the satellite 24 hours, a day, to orbit the Earth once. This is so...
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The primary tools used in early astronomy were a compass to measure directions, a sextant (or octant) to measure angles in the...
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Why can't the moon be eclipsed when it is halfway between the nodes of it's orbit? It can't be eclipsed because most full moons...
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We can not differentiate between the solar system and an elliptical orbit. The solar system consists of planets, their...
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i dont exactly no but it is highly a lot of money for petrol...
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The scientific theory for before the big bang was that there was nothing, absolutely nothing and when the big bang happened it...
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According to scientific theories, there is no such thing which exists in the universe faster than light. Einstein proposed the...
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electromagnetic energy in the form of electromagnetic waves.
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Well, by dividing the distance between the two points which will be used in the measurement, by the time it takes for the light...
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A galaxy consisting of a few hundred billion stars is a mote of dust in the vastness of the universe. Our galaxy (the Milky Way)...
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