Astronomers estimate that the longer tail stretches half a million miles out, while the shorter tail is about a quarter as long.
因此,天文学家估计,赤道的赤道比从极到极的宽度至少高14%。
Accordingly, astronomers estimate that Altair is at least 14 percent wider at the equator than it is from pole to pole.
根据观测发现,天文学家估计这些原行星盘内有1%到2%的碳以纳米钻石的形式存在。
Based on observations, astronomers estimate that up to 1-2 percent of the total carbon in these protoplanetary disks have been used to form nanodiamonds.
天文学家估计质量更大的主星约90倍太阳质量,较小的伴星质量可能超过30被太阳质量。
Astronomers estimate that the more massive star has about 90 times the sun's mass, while the smaller companion may exceed 30 solar masses.
它也可能是最古老的天文学家之一:天文学家估计,最初的爆炸可能发生在8万到100万年前的任何地方。
It is also possibly one of the oldest: Astronomers estimate the original explosion may have happened anywhere from 80,000 to one million years ago.
根据它的质量推算,天文学家估计当它在900万岁时将会变成超新星。
Based on estimates of its mass, astronomers estimate that the red star will go supernova when it's roughly 9 million years old.
天文学家估计,有大约981颗大型近地天体偶尔会悄悄靠近我们的地球。
Astronomers estimate there are about 981 big near-Earth objects that occasionally creep close to our planet.
从反射的亮度来看,天文学家估计小行星的大小约为三分之一英里(0.5公里)。
From its reflected brightness, astronomers estimate that the asteroid is about a third of a mile(0.5 kilometer) in size.
天文学家估计Bedin1的年龄大约为130亿岁,并表示它与其他星系的相互作用已被隔离。
Astronomers estimate Bedin 1's age at about 13 billion years and say it's been isolated from interactions with other galaxies.
天文学家估计银河系可能会充满多达1亿个黑洞。
Astronomers estimate the Milky Way galaxy could be filled with up to 100 million black holes.
天文学家估计,在大约40亿年内,我们的太阳将退出其存在的主要序列阶段,并成为红色巨人。
Astronomers estimate that in about four billion years, our Sun will exit the main sequence phase of its existence and become a red giant.
天文学家估计质量更大的主星约90倍太阳质量,较小的伴星质量可能超过30倍太阳质量。
Astronomers estimate that the more massive star has about 90 times the sun's mass, while the smaller companion may exceed 30 solar masses.
天文学家估计,在过去400年期间,这种恒星加农炮弹(cannonfire)每隔8.5年就发射一次。
Astronomers estimate that this stellar“cannon fire” has occurred once every 8.5 years for at least the last 400 years.
天文学家估计Bedin1的年龄大约为130亿岁,并表示它与其他星系的相互作用已被隔离。
Astronomers estimate that Bedin 1 is about 13 billion years old and say its interaction with other galaxies has been isolated.
天文学家估计该恒星的1%会被最终消耗或吸附掉。
The astronomers estimated about one percent of the star's mass was ultimately consumed, or accreted.
天文学家估计,如果这颗行星存在,它将是一个冰世界,大约是地球的三倍大。
Astronomers have estimated that this planet, if it exists, would be an icy world approximately three times the size of Earth.
天文学家估计,在大约5000万年的时间里,这颗卫星将撞上红色的行星。
Astronomers have estimated that in about 50 million years, this moon will crash into the red planet.
天文学家估计银河系可能会充满多达1亿个黑洞。
Astronomers estimate that the Milky Way could be filled to 100 million black holes.
天文学家估计小行星每几百年造访地球一次。
Astronomers estimate that little asteroids like that come about every hundred years.
天文学家估计宇宙至少有700垓(7×1022)颗恒星。
Astronomers estimate that there are at least 70 sextillion(7×1022) stars in the known universe.
天文学家估计,2014年春季,G2距离黑洞最近,距离150亿英里。
Astronomers estimate that G2 was closest to the black hole in the spring of 2014, 15 billion miles away.
天文学家估计,2014年春季,G2距离黑洞最近,距离150亿英里。
Astronomers estimate that the G2 closer to the black hole in the spring of 2014, to 15 billion kilometers.
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