Take a laser that for about 20 billionths of a second can generate 500 trillion watts—the equivalent of five million million 100-watt light bulbs. Use all that laser power to create x rays that blow off the surface of the capsule. Wait 10 billionths of a second. Result: one miniature star.
To mitigate this issue, astronomers can create artificial stars instead by shining a powerful laser beam into the Earth's upper atmosphere. These laser guide stars allow almost the entire visible sky to be observed with adaptive optics.
Scientists create 'mini star' in laboratory giving hopes for limitless energy. It was over in a flash but scientists have created the equivalent of a star, ten times hotter than the sun, leading to hopes of limitless, pollution free energy.
It's not just possible -- it's already been done. 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. The examples of fusion here on Earth are on a small scale and last for just a few seconds at most.
Planetary scientist and stardust expert Dr Ashley King explains. 'It is totally 100% true: nearly all the elements in the human body were made in a star and many have come through several supernovas.
Elements like hydrogen, nitrogen, carbon, phosphorus, and oxygen are all formed in the bellies of stars. These same elements combine to form molecules like adenine, guanine, thymine, and cytosine (the nucleotides in our DNA). In this way, our DNA is made of stardust.
Most of your body is made of hydrogen and oxygen bonded as molecules of water. That means your body is made up of atoms that are 13.7 billion years old.” The atoms in your body were created at the start of our universe during the Big Bang. So if you look at it this way, then you're about 13.7 billion years old.
Our Sun is 5 billion years old, and so we have no “file footage” of how it was born. But stars elsewhere in the galaxy reveal the birthing process. Hubble's keen vision allowed astronomers to peer deep into gigantic, turbulent clouds of gas and dust where tens of thousands of stars are bursting to life.
Stars twinkle at us in an ethereal way – but some say they're already gone. The light from stars travels great distances across space, but most of the stars we see are still there. When you look into the night sky, you're looking into the past.
Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
An international team of astronomers using Hubble have been able to study stellar evolution in real time. Over a period of 30 years dramatic increases in the temperature of the star SAO 244567 have been observed. Now the star is cooling again, having been reborn into an earlier phase of stellar evolution.
The nearest star is 25,300,000,000,000 miles (about 39,900,000,000,000 kilometers) away. It would take the fastest rockets that we have thousands of years to reach it. It is always possible that sometime in the future people may find a way to travel to the stars, but right now we just do not have the technology.
Humans cannot live on a star because a star is too hot to support organisms (living things). Also because a star has no oxygen, H20 (water), or food.
Created by Rocket Lab founder, Peter Beck, the Humanity Star is a geodesic sphere made with carbon fiber and features 76 reflective panels. Orbiting the Earth every 90 minutes, Humanity Star spins rapidly, reflecting the sun's rays back to Earth, creating a flashing light that can be seen against a backdrop of stars.
For the most part, the stars you see with the naked eye (that is, without a telescope) are still alive. These stars are usually no more than about 10,000 light years away, so the light we see left them about 10,000 years ago.
Using our knowledge of the death rate in the entire Milky Way, the death rate for visible stars works out at about one star every 10,000 years or so. Given that all those stars are closer than 4,000 light-years, it is unlikely – though not impossible – that any of them are already dead.
Answer: Yes. Since all of the information from objects in the universe travels at the speed of light, and most objects are many light years from us, we are indeed seeing objects as they appeared in the past.
Eventually, around 10 million years later, all that is left is a hot core of carbon and gasses that form a "planetary nebula." As the star further burns out, it will diminish into a white dwarf planet.
Giant stars use up their hydrogen fuel quickly, resulting in short lifetimes. An eight solar mass star will live less than 100 million years. At 10-15 solar masses, the lifetime of the star drops to only 10-20 million years. The most massive giant stars are believed to live no more than a few million years.
In life, the human body comprises matter and energy. That energy is both electrical (impulses and signals) and chemical (reactions).
Part of Hall of the Universe. Every atom of oxygen in our lungs, of carbon in our muscles, of calcium in our bones, of iron in our blood - was created inside a star before Earth was born. Hydrogen and helium, the lightest elements were produced in the Big Bang.
The human body is approximately 99% comprised of just six elements: Oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. Another five elements make up about 0.85% of the remaining mass: sulfur, potassium, sodium, chlorine, and magnesium. All of these 11 elements are essential elements.
It is estimated that there are roughly 200 billion galaxies (2×1011) in the observable universe. Most galaxies are 1,000 to 100,000 parsecs in diameter (approximately 3,000 to 300,000 light years) and are separated by distances on the order of millions of parsecs (or megaparsecs).
When a main sequence star begins to run out of hydrogen fuel, the star becomes a red giant or a red super giant. THE DEATH OF A LOW OR MEDIUM MASS STAR After a low or medium mass or star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a planetary nebula.