How do we know what Nebulae look like? - Deepstash
How do we know what Nebulae look like?

How do we know what Nebulae look like?

Astronomers use very powerful telescopes to take pictures of of faraway Nebulae.

  • Space telescopes such as NASA's Spitzer space telescope and Hubble space telescope have captured many images of faraway nebulae.

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MORE IDEAS FROM What Is a Nebula? | NASA Space Place – NASA Science for Kids

What is a Nebula?

A Nebula is a giant cloud of dust and gass in space.

  • Some Nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova.

Other nebulae are regions where new stars are beginning to form. For this reason, some Nebulae are called "star nurseries."

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How do stars form in a Nebula

Nebulea are made of dust and gases—mostly hydrogen and helium.

  • The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas.

As these clumps get bigger and bigger, their gravity gets stronger and stronger. Eventually, the clump of dust and gas gets so big that it collapses from its own gravity.

  • The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.

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Where are Nebulae?

Nebulae exits in space between the stars—also known as interstellar space. The closest known nebula to earth is called the Helix Nebula.

  • It is the remnant of a dying star—possibly one like the Sun. It is approximately 700 light-years away from Earth.

That means even if you could travel at the speed of light, it would still take you 700 years to get there!

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Jupiter

Jupiter is our fith planet from our Sun and is by far, the largest planet in the solar system - more than twice as massive as all the other planets combined. Jupiter's stripes and swirls are actually cold, windy clouds of ammonia and water, floating in an atmosphere of hydrogen and helium. Jupiter’s iconic Great Red Spot is a giant storm bigger than Earth that has raged for hundreds of years.

Jupiter is surrounded by dozens of moons. Jupiter also has several rings, but unlike the famous rings of Saturn, Jupiter’s rings are very faint and made of dust, not ice.

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What is a black hole?

A black hole is a place in space here gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.

Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.

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What is the Largest Star in our Universe?

UY Scuti is the largest star in the observable Universe with a mass coming in at around 1,700 times larger than the mass of the sun. 

UY Scuti is a specific type of star known as a hypergiant which are usually short lived and extremely rare because of the fact that they lose a large portion of their mass extremely quickly due to stellar winds.

To give some perspective, UY Scuti is around 6.5 Quadrillion times larger than Earth, 738.4 million miles in radius, and is 9,500 light years away from our solar system.

It really makes you think as to how something so large can exist in our universe.

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