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In October 2016, deep-field images from the Hubble Space Telescope suggested that there are about 2 trillion galaxies in the observable universe, or about 10 times more galaxies than...
Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun.
The observable universe contains as many as an estimated 2 trillion galaxies [41] [42] [43] and, overall, as many as an estimated 10 24 stars [44] [45] – more stars (and, potentially, Earth-like planets) than all the grains of beach sand on planet Earth.
Astronomers had estimated that the observable universe has more than 100 billion galaxies. Our own Milky Way is home to around 300 billion stars, but it’s not representative of galaxies in general.
With 100-billion stars in the Milky Way and two trillion galaxies in the observable universe, we simply multiply 100-billion by two trillion. Thus, the number of stars in the universe is estimated to be 200-billion trillion.
The answer: There are approximately 2,000,000,000,000 galaxies in the universe – that’s 2 trillion. 15,000 galaxies appear as small dots and blots in this NASA photograph of the nighttime sky....
According to astronomers, there are probably more than 170 billion galaxies in the observable Universe, stretching out into a region of space 13.8 billion light-years away from us in all...
Scientists can estimate the number of stars in the universe by multiplying the average number of galaxies by the average number of stars.
Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also! Hipparcos mapped millions of stars in our galaxy, but how many more are there?
Our Milky Way galaxy — our cosmic home in the Universe — spans over 100,000 light-years in diameter and contains approximately 400 billion stars. There are about 60 galaxies, total, in our...