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2 days ago · Have you ever looked up at the night sky and wondered how stars are born? In this video, we explore the fascinating process of star formation, from the gravi...
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- Daily Brain Bites
Star Life-cycle-Supernovas. Kids Fun Facts Corner. # 1. It is believed that almost every star has the same chemical composition. That basically means that all stars are made up of the same thing. # 2. If a star is created really large after its birth, the star will live for less time as a smaller star. Q&A Corner.
- The Dusty Nuseries of Stars
- The Collapsing Molecular Cloud
- From pre-stellar CORE to Star
- Observing Molecular Clouds
- Conclusion
- Conflict of Interest Statement
A galaxy contains not only billions of stars, but also large amounts of gas and dust. These regions of gas and dust in the galaxy lie in the space between the stars. If the galaxy were a street, the houses would be stars and the regions of gas and dust would be the gardens in between the houses. The space between the stars in a galaxy is called the...
A molecular cloud is very cold, only a few degrees above absolute zero, which is the lowest temperature possible (also called 0°K). But, when gas and dust start to collapse in a region within the molecular cloud, it slowly heats up. This is a consequence of a law of physics, which tells us that, when matter is squeezed together, the density of the ...
The disk is crucial for the proto-star to grow into a properly sized star. The disk is mainly composed of gas, which rotates with the disk and slowly approaches the surface of the proto-star. When the gas comes close enough to the star, it falls onto the surface of the star because of gravity, and the star grows. This process of growing is called a...
Molecular clouds that host and shape newborn stars are dark areas in the night sky. It is not possible for a human to see a molecular cloud—not even with a telescope. The reason that we cannot see a molecular cloud is that dust particles are scattered all over the cloud, and they absorb the light from surrounding stars. This prevents starlight from...
The great mystery arises when very large stars form. Astronomers know that stars up to about six times the mass of our Sun are born the way we have described in this article. Stars with greater masses require a different process, because the pressure from the stars' radiation will push the disk away, preventing stars from growing larger than roughl...
The author declares that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
How does a Star form? Star formation takes place in swirling clouds of gas and dust that are many times larger than a typical solar system. Over time, a region within the cloud becomes denser than its surroundings. At this point, gravity kicks in and the cloud starts to collapse in on itself. As the cloud shrinks, its centre (or core) becomes ...
Stars are giant spheres of superhot gas made up mostly of hydrogen and helium. Stars get so hot by burning hydrogen into helium in a process called nuclear fusion. This is what makes them so hot and bright. Our Sun is a star. Lifecycle of a star. Birth - Stars start out in giant clouds of dust called nebulae.
Oct 16, 2023 · In the dense nebulae where stars are produced, much of the hydrogen is in the molecular (H 2) form, so these nebulae are called molecular clouds. The largest such formations, giant molecular clouds, have densities of 100 particles per cm 3 , diameters of 100 light-years (9.5 × 10 14 km ), and masses up to 6 million solar masses , and an average interior temperature of 10 K.
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Neutron stars, the densest stars known, compress a mass greater than that of our Sun into a city-sized sphere. Finally, the explosive deaths of the most massive stars as supernovae seed the cosmos with the dust and gas needed to form new stars. Stellar Composition and Elements. Stars begin their lives as clouds of hydrogen and helium. Through ...
