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The term "planetary nebula" is a misnomer becausethey are unrelated to planets. The term originates from the planet-like round shape of these nebulae observed by astronomers through early telescopes. ... All planetary nebulae form at the end of the life of a star of intermediate mass, about...
They follow particular patterns, with high points called "crests" and low points called "troughs." The time it takes for part of a wave to pass, measured from one crest to the next, is called the period.Answer and Explanation: Cepheid variables are a type of star that pulsate in a ...
The other type of Rogue Stars move at a different speed and path than everyone else. The best example is the hypothetical browndwarf starcallednemesis. The theory behind Nemesis is that every 26 million years, there is amass extinction, which would coincide with Nemesis coming closest to theOor...
is still considered a "morning" star. This is particularly true during the wintertime when the sun sets rather early in the evening. If a planet like Mars, does not emerge above the eastern horizon until an hour or two after sunset, it will still be branded as a "morning star" even ...
Is this a Mormon thing? Dirty sodas satisfy a craving that Mormon communities can’t indulge in, serving as a tempting substitute for potential vices. Still, the drinks aren’t limited to the religion. In 2022, the fizzy drinks exploded with popularity onTikTokwhere users showed off the milky...
Today, it's known that the long-term fate of a star depends on whether its mass is above or below a boundary called the Chandrasekhar limit. Stars of less than eight solar masses (M☉) or so are thought to end their lives as a long-lived stellar ember called a white dwarf star. Ab...
One of the most striking examples of a supernova remnant is the Crab Nebula, found in the constellation of Taurus. Sometime between April and June of 1054, a so-called "guest star" flared into being, visible to the naked eye where no star had been discernible before. Two years later, ...
正确答案:A 正确答案解释:正确答案为A 3. - What can we do for the case? -___ 单选题(2.0分)(难易度:中) A. We?could?consult?our?lawyer. B. The?case?is?difficult. C. I?dont?care?about?it. 正确答案:A 正确答案解释:正确答案为A 4. 一、交际用语(共计10分,每小题2分) 1-5题:阅...
We’ve all seen lighthouses on Earth, a spinning light atop a tower that is meant to keep ships from coming to close ashore at night. These lighthouse | Space