what is the perigee and apogee of sun's orbit? During it's journey how many new galaxies are found so far?
106777
The terms perigee and apogee refers to the earths orbit around the sun. If that is your question then it has already been answered. \nIf you mean the suns orbit around the galactic nucleus then a "solar year" is somewhere in the neighbourhood of 230 million earth years. In only a few centuries we have found that the universe is littered with galaxies. There are probably about 50 to 100 billion of them. So how many would we discover in another 230 million years? I´d say a bunch.
5355
No one knows.\n\nThere are about 10 planets in our solar system, depending on whom you ask.\n\nAround 100 planets have been detected in other solar systems.\n\nThere are at least 200 billion stars in the Milky Way Galaxy (ours).\n\nIf the average number of planets per star is 10, then there are 2000 billion or 2 trillion planets in our galaxy.\n\nNo one knows how many billion galaxies are in the Universe.
329537
5 billion years or so.\n\nhttp://www.enchantedlearning.com/subjects/astronomy/sun/sundeath.shtml
662818
Solar system  \n\nThe solar system comprises our Sun and the retinue of celestial objects gravitationally bound to it. Traditionally, this is said to consist of the Sun, nine planets and their 158 currently known moons; however, a large number of other objects, including asteroids, meteoroids, planetoids, comets, and interplanetary dust, orbit the Sun as well.
1161939
This is difficult to answer.  Is there a galaxy destroyed everytime I clean my fingernails?\n\nI don't feel we have a good measure of what a galaxy is, our galaxy seems huge, yet we know very little about the boundaries (i.e. what if there were another galaxy right next to ours that we could not reach, like we were different slices of bread, intimately close, yet forever separated)
777030
The orbit the moon makes around the earth is not an exact circle, but an ellipse.\n\nThe perigee [or closest approach to earth] = 363,104 km\nThe apogee [or furthest distance to earth] = 405,696 km\n\nThe time it takes for the moon to complete one orbit around the earth is 27 days, 7 hours, and 43.1 minutes.\n\nHope this helps!
926855
The way to measure it is to measure the redshift of galaxies at different distances. Are they starting to slow down, or not? But like was said above, I'm not going to worry about it. Not that cosmology isn't a fun thing to study, but as far as applications it's just about there with Abstract Art. I would say let's concentrate on applied physics, earth and solar science first, develop some new technologies, maybe colonize Mars, some other solar systems, or a good fraction of the galaxy and then we can worry about the fate of the universe when we have more tools, power and understanding to explore or do something about it. It's noble and admirable, but might be like a caveman pondering the lifespan of the sun - that large bright circle that goes around the flat earth. Occasionally skipping ahead is rewarded - most times it's a shot in the dark.
324411
Mean distance from\nEarth 149.6×106 km\n(92.95×106 mi)\n(8.31 minutes at the speed of light) \n\n--\nThe Sun is the spectral type G2V yellow star at the center of Earth's solar system. The Earth and other matter (including other planets, asteroids, meteoroids, comets and dust) orbit the Sun. Different latitudes of the Sun rotate at different rates; a point on the equator takes 25 days to complete a rotation, while a point at a pole takes 36 days. The resultant torsion creates the Sun's very strong magnetic field, which in turn drives the 11-year cycle of solar activity. The Sun accounts for more than 99% of the solar system's mass. Energy from the Sun has supported almost all life on Earth through photosynthesis since the appearance of the first organisms. Humans use sunlight for eyesight, warmth, growing crops, and powering solar cells.\n\nThe Sun is a ball of plasma with a diameter of 1.392 million km (864,950 mi) and a mass of about 2.0×1030 kg, which is somewhat greater than that of an average star in the Milky Way galaxy. About 74% of its mass is hydrogen, with 25% helium, and the rest made up of trace quantities of heavier elements. The Sun is about 4.6 billion (109) years old and is about halfway through its main sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. About 5 million tons of matter are converted into energy within the Sun's core every second, producing neutrinos and solar radiation. In about 5 billion years, the Sun will evolve into a red giant and then a white dwarf, creating a planetary nebula in the process.
207814
Perigee    363,300 km \nMean  384,400 km \nApogee  405,500 km
980491
Our solar system is located in the outer reaches of the Milky Way Galaxy, which is a spiral galaxy. The Milky Way Galaxy contains roughly 200 billion stars. Most of these stars are not visible from Earth. Almost everything that we can see in the sky belongs to the Milky Way Galaxy. \n\nThe sun is about 26,000 light-years from the center of the Milky Way Galaxy, which is about 80,000 to 120,000 light-years across (and less than 7,000 light-years thick). We are located on on one of its spiral arms, out towards the edge, called the "Orion Arm". \n\nIt takes the sun (and our solar system) roughly 200-250 million years to orbit once around the Milky Way. In this orbit, we (and the rest of the Solar System) are traveling at a velocity of about 155 miles/sec (250 km/sec). \n\nThe centre of the Milky Way Galaxy lies in the direction of the constellation Sagittarius.
777198
the Milky Way is a galaxy
21164
4 In recent centuries astronomers who scanned the heavens with early telescopes noticed some fuzzy, cloudlike formations. They assumed that these were nearby clouds of gases. But in the 1920’s, as larger, more powerful telescopes came into use, these “gases” were found to be something far more immense and significant: galaxies.\n\n5 A galaxy is a vast group of stars, gas and other material rotating around a central nucleus. Galaxies have been called island universes, for each one of them is in itself like a universe. For example, consider the galaxy we live in, which is called the Milky Way. Our solar system, that is the sun and the earth and other planets with their moons, is part of this galaxy. But it is only a very tiny part, for our Milky Way galaxy contains over 100 billion stars! Some scientists estimate at least 200 to 400 billion. And one science editor even stated: “There could be as many as five to ten trillion stars in the Milky Way galaxy.”2\n\n6 The diameter of our galaxy spans so vast a distance that if you could travel as fast as the speed of light (186,282 miles a second) it would take you 100,000 years to cross it! How many miles is that? Well, since light travels about six trillion (6,000,000,000,000) miles in a year, multiply that by 100,000 and you have the answer: our Milky Way galaxy is about 600 quadrillion (600,000,000,000,000,000) miles in diameter! The average distance between stars within the galaxy is said to be about six light-years, or about 36 trillion miles.\n\n7 It is almost impossible for the human mind to comprehend such size and distance. And yet, our galaxy is just the beginning of what is in outer space! There is something even more staggering. It is this: So many galaxies have now been detected that it has been said they “are as common as blades of grass in a meadow.”3 About ten billion galaxies are in the observable universe! But there are many more beyond the range of today’s telescopes. Some astronomers estimate that there are 100 billion galaxies in the universe! And each galaxy may contain hundreds of billions of stars! I don't think there's an end in sight.
53782
The Earth rotates on its axis at 1000 miles per hour (1600 kph). It orbits around the Sun at an average speed of around 67,250 miles per hour (107,600 kph). The Sun, in turn, is orbiting around the centre of the galaxy at a speed of 540,000 miles per hour. So the combined speed through space of the Earth and the Sun is 607,250 miles per hour. But there´s more - our Galaxy is also hurtling through space at a speed of 360,000 miles per hour. The combined motion of the Earth, Sun and Galaxy means that we are about twenty three and a quarter million miles away from where we were in space this time yesterday.\n\n  The Solar Sytem is believed to be about 4.5 billion years old but it's constituent parts were undoubtedly moving even before that. It is predicted\nthat our Milky Way galaxy will collide with the Andromeda galaxy in, roughly, 5 billion years.
563730
Galaxies are clusters of stars and its planetary systems found in groups across the universe. List of Galaxies can be found in link below. \n\nThey are really far... measured in light years and the distance is increasing as per our expanding universe.
670477
There are 1019203948105 Galaxies...\n3 more are to be developed next year, and will be released on the 3rd of march.\nCool isn't it?
1007479
Yes.  Beyond our own Milky Way galaxy there are estimated to be 200 billion more galaxies in the visible universe at distances up to 13 billion light years from Earth.
362021
We can only give a rough guess as to how many galaxies there are, and it's billions at least. All but the closest ones visible as galaxies to the naked eye have names. Our local galaxy is the Milky Way, which you can see in a dark place on a clear night as a streak of stars running across the sky. A cluster is a group of galaxies.\n\nSome galaxies we have discovered with Hubble and other new telescopes seem to crashing into each other, and the Milky Way may be on its way to having a galactic interloper in the far future.