What is biggest star in our galaxy?

What is biggest star in our galaxy?

Pistol Star

What is the evidence of dark matter in our galaxy?

Primary evidence for dark matter comes from calculations showing that many galaxies would fly apart, or that they would not have formed or would not move as they do, if they did not contain a large amount of unseen matter.

Where do we find evidence of dark matter?

Evidence for dark matter in clusters of galaxies In clusters of galaxies, we derive the gravitational mass by measuring the orbital motions of the member galaxies.

What would happen if we touched antimatter?

When antimatter and regular matter touch together, they destroy each other and release lots of energy in the form of radiation (usually gamma rays). If it’s a small amount, it’s totally safe. If it’s a large amount, the gamma radiation would be enough to kill you or cause serious harm.

Can dark matter be proven?

“I once would have said the same things: it’s absolutely proven that there’s dark matter, don’t worry about it,” he said. But many of the predictions of MOND have been seen in astronomical observations, and the latest research is one more piece of evidence for it, he said.

How did we find out about dark matter?

Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Chandra observed a cluster of galaxies called Abell 2029 located about a billion light-years from Earth.

What can 1 gram of antimatter do?

Antimatter-matter annihilations have the potential to release a huge amount of energy. A gram of antimatter could produce an explosion the size of a nuclear bomb. Making 1 gram of antimatter would require approximately 25 million billion kilowatt-hours of energy and cost over a million billion dollars.

Why antimatter is so expensive?

Due to its explosive nature (it annihilates when in contact with normal matter) and energy-intensive production, the cost of making antimatter is astronomical. CERN produces about 1×10^15 antiprotons every year, but that only amounts to 1.67 nanograms.

Can antimatter destroy the world?

“It’s true that when matter and antimatter meet, they do annihilate in a big explosion and convert their mass to energy. Scientists are neither interested in creating nor able to create enough antimatter to make a world-destroying antimatter bomb.

What does antimatter explosion look like?

Not all of the antimatter+normal matter mass gets converted into energy. Huge explosion, a few hundred megatons. On this very large scale an antimatter explosion looks a lot like a regular, very large thermonuclear explosions, but there are a number of differences in detail.

How much antimatter would it take to destroy a city?

You’re looking at 1–2 kg for the centers of London or LA. You’re looking at more like 5–10 kg to destroy the whole urban area.

How much antimatter would it take to destroy the earth?

How much antimatter would our villain need to annihilate with “normal” matter in order to release the amounts of energy required for the destruction of Earth? Lots! Approximately 2.5 trillion tons of antimatter.

Can antimatter be used as a weapon?

An antimatter weapon is a theoretically possible device using antimatter as a power source, a propellant, or an explosive for a weapon. Annihilation requires and converts exactly equal masses of antimatter and matter by the collision which releases the entire mass-energy of both, which for 1 gram is ~9×1013 joules.

Is Antimatter more powerful than nuclear?

Antimatter is nearly 10 times more powerful than the most powerful nuclear weapons, due to the fact that nuclear reactions only release 10% of their energy created as the blast itself. Antimatter, being antimatter, gives all 100% as the explosion. One gram of antimatter has yield of 40 kilotons.

Where is antimatter found?

Satellite experiments have found evidence of positrons and a few antiprotons in primary cosmic rays, amounting to less than 1% of the particles in primary cosmic rays. This antimatter cannot all have been created in the Big Bang, but is instead attributed to have been produced by cyclic processes at high energies.

Could antimatter be used as a fuel source?

When antimatter comes into contact with matter it annihilates: the mass of the particle and its antiparticle are converted into pure energy. Unfortunately, however, antimatter cannot be used as an energy source.

Is there an antimatter universe?

The Big Bang should have created equal amounts of matter and antimatter in the early universe. But today, everything we see from the smallest life forms on Earth to the largest stellar objects is made almost entirely of matter. Comparatively, there is not much antimatter to be found.

Can antimatter be used as power?

A staple of science fiction that tries to explain interstellar travel is use of matter-antimatter reactors as a power source. Does antimatter make a good fuel to power the starships of tomorrow? What about more earthbound uses? The short answer is no.

Is Antimatter the most efficient fuel?

Antimatter is the most efficient source of energy in the entire universe, when antimatter meets its equivalent matter; they annihilate each other resulting in an explosion that converts all the mass of the particle and its antiparticle into pure energy.