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Some radioactive isotopes found in meteorites suggest that the solar system may have been formed shortly after a supernova occurred nearby?
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How the atmosphere hydrosphere geosphere and biosphere are each related to the death of stars that occurred billions of years ago?
The early Universe basically only consisted of hydrogen, and small amounts of helium. Heavier elements were created in the center of stars - these materials got into space, mainly through supernova explosions, and became part of newer solar systems.
Which country received the most radiation from Chernoybl?
The Soviet Union, since this is where the Chernobyl disaster occurred. Specifically, it occurred in the Soviet Socialist state of Ukraine.
When did photosynthesis first occurred and what effect it had on earth?
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What does Syme predict will have occurred by 2050?
the whole literature of the past will be destroyed
Why did the space race occurred?
Due to Sputnik's launch on October 4 1957.
Why did the supernova 1987A actually occur in 1977?
It didn't. It occurred approximately 168,000 years before 1987.
Is crab nebula same as supernova?
It's not the same as a supernova--the Crab Nebula is the visible remnant of a supernova event which occurred about 7,500 years ago. The light from the supernova explosion reached the earth and was observed by Chinese and Arab astronomers about 1,000 years ago. The Crab Nebula was the first object to be identified with a supernova which was actually observed during recorded history.
When the amount of a radioactive substance is reduced by 50 percent what has occurred?
Half-Life APEX (; xoxo
What are the isotopes of radon?
There's just the one, and it's 222Rn, or radon-222. There might be a trace of some of the other isotopes around if there has been a nuclear accident or the like, but it is unlikely that they could be detected unless the accident was huge, had just occurred and you were testing right on top of it.
What is the element with the heaviest stable isotope?
Tin is the element with the most stable isotopes, ten. Xenon is second with nine isotopes. Both Xenon and Cesium have 36 possible isotopes, but 27 of Xenon's and 35 of Cesium's isotopes are radioactive. This means that they decay over time and "shed" particles. Hydrogen has the smallest amount of isotopes, with three total and two stable isotopes.
Solar system may have been formed shortly after a supernova occurred nearby?
It need not have been "shortly after"; the key point is that part of the material in the Solar System must have come from supernova explosions, at some previous point - or we wouldn't have sufficient amounts of heavier elements.
Dating uses the properties of atoms in rocks and other objects to find their ages?
Dating methods like radiometric dating use the decay of radioactive isotopes in rocks to determine their age. By measuring the ratios of different isotopes in a sample, scientists can calculate how long it has been since the rock formed. This can provide valuable information about the history of the Earth and when specific events occurred.
When did supernova 1987A occurred?
SN 1987A [See Link] was a supernova in the Tarantula Nebula in the Large Magellanic Cloud, a nearby dwarf galaxy. It occurred approximately 168,000 light years from Earth, close enough that it was visible to the naked eye. It was the closest observed supernova since SN 1604, which occurred in the Milky Way. The light from the supernova reached Earth on February 23, 1987. As the first supernova discovered in 1987, it was labeled "1987A".
How is the solar system made up of?
Condensed clouds of interstellar gas that originally assembled from the remnants of nova or supernova stellar explosions that occurred many eons before our Solar System was formed.
Is uranium 238 a natural element?
yes, it was formed in supernova explosions that occurred before the formation of the solar system
Is every element occurred naturally?
Yes, probably . . . they would have been created during a supernova explosion. But they are so radioactive that they decayed not long after Earth was created. So, no, there are no natural elements left on Earth. There are 20 synthesized (manmade) elements so far created. Most are named after famous nuclear scientists like Einstein, Bohr, Nobel, Fermi, Mendel, Rutherford, and Roentgen. Most don't last long after being synthesized.
What happened in Three Mile Island in the 1970s?
Three Mile Island related to an incident which occurred in Dauphin County, Pennsylvania on March 28th, 1979. On this Wednesday morning, around the time of 4am, there was a partial nuclear meltdown which released radioactive gases and radioactive iodine into the environment.
