What does it take to make a star?


Adalind Welsch   |   Member since 2020  |  10+ Answers Submitted  |  ✔ Verified

A star shines because of the thermonuclear reactions in its core, which release enormous amounts of energy by fusing hydrogen into helium. For the fusion reactions to occur, though, the temperature in the star's core must reach at least three million kelvins.

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Matt Middleton   |   Member since 2011  |  10+ Answers Submitted  |  ✔ Verified

Consequently, can a star be made?

If you think of a star as a nuclear fusion machine, mankind has duplicated the nature of stars on Earth. But this revelation has qualifiers. To understand how scientists can make a star, it's necessary to learn what stars are made of and how fusion works. The sun is about 75 percent hydrogen and 24 percent helium.

Also, what are three key ingredients needed to create a star? Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements. Most stars have small amounts of heavier elements like carbon, nitrogen, oxygen and iron, which were created by stars that existed before them.


Audrey Hale   |   Member since 2013  |  10+ Answers Submitted  |  ✔ Verified

Similarly, you may ask, how long does it take to form a star?

about 10 million years .


Bryon Oswald   |   Member since 2006  |  10+ Answers Submitted  |  ✔ Verified

How does a star's life begin?

A star begins its life as a cloud of dust and gas (mainly hydrogen) known as a nebula. A protostar is formed when gravity causes the dust and gas of a nebula to clump together in a process called accretion. If a critical temperature in the core of a protostar is reached, then nuclear fusion begins and a star is born.


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Candace Neville   |   Member since 2020  |  ✔ Verified

What does a shooting star mean?

A shooting star is really a small piece of rock or dust that hits Earth's atmosphere from space. It moves so fast that it heats up and glows as it moves through the atmosphere. Shooting stars are actually what astronomers call meteors. Most meteors burn up in the atmosphere before they reach the ground.


Marigold Leslie   |   Member since 2005  |  ✔ Verified

What is the birth of a star called?

Star birth. Like people, stars are born, they grow old and they die. Their birth places are huge, cold clouds of gas and dust, known as 'nebulas'. The most famous of these is the Orion nebula, which is just visible with the unaided eye.


Alexander Wren   |   Member since 2010  |  ✔ Verified

Whats the brightest star in the sky tonight?

Bottom line: We get many questions about a bright, colorful, twinkling star on these October mornings. It's the star Sirius in the constellation Canis Major, brightest star in the sky. The bright planet Venus is also up before dawn now. But you'll know Sirius, because Orion's Belt always points to it.


Melanie Lynch   |   Member since 2007  |  ✔ Verified

How do stars die?

Stars die because they exhaust their nuclear fuel. Really massive stars use up their hydrogen fuel quickly, but are hot enough to fuse heavier elements such as helium and carbon. Once there is no fuel left, the star collapses and the outer layers explode as a 'supernova'.


Gemma Slater   |   Member since 2017  |  ✔ Verified

Are stars still being born?

We're still producing new stars, however. Even though approximately one new Sun's mass worth of stars forms per year in our galaxy, they mostly occur in dense clouds in the galactic plane or, in smaller extents, in the central bulge.


Denis Burge   |   Member since 2010  |  ✔ Verified

What is the closest star to Earth?

Proxima Centauri


Phillip Myatt   |   Member since 2014  |  ✔ Verified

Can we create our own sun?

All stars including our own sun generate their astounding energy through the process of nuclear fusion. Their intense gravity creates extremely high temperature and pressure at their cores, which squeezes together atoms of hydrogen gas fusing them into a helium nucleus.


Catherine Richardson   |   Member since 2015  |  ✔ Verified

What is a star NASA?

Stars. A star is a sphere of gas held together by its own gravity. This phase of the star's life is called the main sequence. Before a star reaches the main sequence, the star is contracting and its core is not yet hot or dense enough to begin nuclear reactions.


Maxwell Drake   |   Member since 2009  |  ✔ Verified

How big is a star in the sky?

Astronomers generally measure the size of stars in terms of the radius of our sun. For instance, Alpha Centauri A has a radius of 1.05 solar radii (the plural of radius). Stars range in size from neutron stars, which can be only 12 miles (20 kilometers) wide, to supergiants roughly 1, 000 times the diameter of the sun.


Darlene Upton   |   Member since 2013  |  ✔ Verified

Do stars move?

The stars move along with fantastic speeds, but they are so far away that it takes a long time for their motion to be visible to us. You can understand this by moving your finger in front of your eyes. Even when you move it very slowly, it may appear to move faster than a speeding jet that is many miles away.


Owen Jennson   |   Member since 2015  |  ✔ Verified

What is a star in the sky?

What is a star? A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. The Sun is the closest star to Earth.


Henry Speed   |   Member since 2010  |  ✔ Verified

How are planets formed?

The various planets are thought to have formed from the solar nebula, the disc-shaped cloud of gas and dust left over from the Sun's formation. The currently accepted method by which the planets formed is accretion, in which the planets began as dust grains in orbit around the central protostar.


Evie Walker   |   Member since 2018  |  ✔ Verified

Why do stars twinkle?

The stars twinkle in the night sky because of the effects of our atmosphere. When starlight enters our atmosphere it is affected by winds in the atmosphere and by areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground.


Josh Savage   |   Member since 2009  |  ✔ Verified

What is the brightest star?

Sirius A


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