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Why do we assume black holes are spherical?
The area of gravitational influence around planets, stars, and black holes is spherical because it pulls equally in all directions.
Universe
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Articles about Universe
2,417 published items.
Space science
'Monster' scarier than black holes, what exactly is a quasar?
To date, there are still many unknown and uncertain aspects about the properties and behavior of quasars.
Space science
Are there many planets with life?
We know that one in five stars has an Earth-like planet. There are 200 billion stars in our galaxy alone.
Space science
How many planets are there in the universe?
Astronomers estimate there are about 100,000 trillion billion planets in the universe based on the assumption that every star has a planet orbiting it.
Space science
James Webb Telescope Reveals Secrets of the Universe: Was the Big Bang Just a Man's Imagination?
How did the universe come into being? This is one of the oldest and most intractable questions in human history.
Space science
Could our entire universe be inside a black hole?
What if we - and our entire universe - were inside a black hole?
Space science
Assuming the size of the Earth is 1cm, what is the size of the largest star in the universe?
If the Earth were the size of a marble, the Sun would be the size of a yoga ball, and the largest star in the universe has a diameter that would be hard to believe.
Space science
What is a spacecraft 23 billion kilometers from Earth doing?
The twin spacecraft Voyager 1 and Voyager 2 continue to explore the universe 45 years after launching from Earth and 22 light hours away from the planet.
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How to feel the Earth rotating every day? Observe these 4 phenomena!
We know that in this universe, basically all celestial bodies rotate, of course our Earth is no exception.
Space science
The largest star ever known in the universe, hundreds of times more massive than our Sun
Hidden in the Large Magellanic Cloud, a nebula just outside the Milky Way, lies what may be the largest known star in the entire universe.
Space science
Discovering the first merging galactic cores at the dawn of the universe
Astronomers have discovered two active black holes merging at the furthest distance ever seen, about 900 million years after the Big Bang.
Space science
Discovery changes fundamental theory of light
Scientists have found a new limit on the mass of a particle of light (photon) based on indirect measurements.
Discover science
First X-ray image of an atom taken
The image of the smallest chemical element has finally been captured by scientists using X-rays.
Discover science
The Secret of Three Ancient Chinese Books That Could Help the Ancients Understand the Universe and Live Longevity!
In Chinese history there are many ancient works that are considered to be