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Tag Archives: blog6
Orbital Decay and China’s Space Station
All satellites in low Earth orbit will eventual fall victim to orbital decay. Over time, a satellite will lose orbital energy through drag caused by friction with the atmosphere. Many large satellites, such as the ISS, employ small thrust to counter out the effects of orbital decay. However, as shown by China’s space station, … Continue reading Orbital Decay and China’s Space Station → Continue reading
Orbital Decay and China’s Space Station
All satellites in low Earth orbit will eventual fall victim to orbital decay. Over time, a satellite will lose orbital energy through drag caused by friction with the atmosphere. Many large satellites, such as the ISS, employ small thrust to counter out the effects of orbital decay. However, as shown by China’s space station, … Continue reading Orbital Decay and China’s Space Station → Continue reading
Milky Way Center Home to Thousands of Black Holes
Astrophysicists at Columbia University have discovered a dozen black holes surrounding Sagittarius A*, the supermassive black hole that lies at the center of the Milky Way. The prevailing theory rests that there are supposed to be tens of thousands of black holes filling areas just light-years wide, detectable only from X-ray bursts that originate as … Continue reading Milky Way Center Home to Thousands of Black Holes → Continue reading
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Tagged astro2110, blackholes, blog6, gravitationalwaves
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James Webb Space Telescope
In 1995, one of the most famous photos in astronomy was taken by the Hubble Space Telescope. Dr. Robert Williams instructed his team to point the lens at nothing in particular in the sky – only 0.9 arc seconds of the night sky. Over 10 consecutive days, Hubble took over 342 exposures and combined them … Continue reading James Webb Space Telescope → Continue reading
Posted in Instruments
Tagged astro2110, blog6, technology, telescopes
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The End of the World?
There are so many objects in the solar system that coexist with Earth in this universe. These objects range range from other planets, moons, asteroids and comets. But what would happen if they stopped playing nice with each other and ended up colliding? Specifically, what would happen if a comet hit the Earth? Well, that … Continue reading The End of the World? Continue reading
Posted in Small SS Objects, Terrestrials
Tagged astro2110, blog6, Comets, impacts
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Hubble Space Telescope Images the Most Distant Star Ever Observed
Last week, a group of astronomers announced in Nature Astronomy that they had discovered the furthest star ever seen: a blue supergiant named Icarus that shone nearly 10 billion years ago, and located more than halfway across the universe. The astronomers were able to do this with the Hubble, and gravitational lensing. Per the lead author of … Continue reading Hubble Space Telescope Images the Most Distant Star Ever Observed → Continue reading
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Tagged astro2110, blog6, discoveries, hubble
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Hubble Space Telescope Images the Most Distant Star Ever Observed
Last week, a group of astronomers announced in Nature Astronomy that they had discovered the furthest star ever seen: a blue supergiant named Icarus that shone nearly 10 billion years ago, and located more than halfway across the universe. The astronomers were able to do this with the Hubble, and gravitational lensing. Per the lead author of … Continue reading Hubble Space Telescope Images the Most Distant Star Ever Observed → Continue reading
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Tagged astro2110, blog6, discoveries, hubble
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Some Interesting Facts about Uranus
Uranus is one of the gas giants in our solar system. Unlike most of the objects in our solar system, Uranus is rotating in an opposite direction, which means it is rotating clockwise if viewed from Earth’s north pole. However, this is not a unique feature. In fact, Venus does this as well. Uranus’s tile … Continue reading Some Interesting Facts about Uranus → Continue reading
Planet X: The Real 9th Planet?
With Pluto’s demotion to a “dwarf planet,” the solar system was left with 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. It now seems that the number 8 may not survive for long, as researchers are now searching for a 9th planet that they think exists in the far-away outer solar system. […] Continue reading
~Gravitational Waves~
Gravitational waves!! Only recently detected even indirectly, they offer some evidence to support Einstein’s theory of relativity from the early twentieth century. The theory states that dense, heavy objects (like Earth, for example) distort space-time in the same way a marble would bend a normally flat stretch of fabric. When two extremely dense objects (such … Continue reading ~Gravitational Waves~ → Continue reading