White Holes

Everyone knows of Black hole but most things in the universe have an opposite like matter and anti matter, therefore what is the opposite of something that sucks in everything including light. The answer is a white hole. White holes are very interesting for everyone as it is something that is difficult to imagine. What could be the function of the opposite of a black hole, this is what I'm here to tell you about.

A white hole is a hypothetical region of space time which cannot be entered from the outside although matter and light can escape from it. This must be difficult to imagine. If matter and light cannot enter then how can anything exit as for there to be an exit there must first be an entry. This question is what scientists are trying to answer and their success has been rather limited. Recently in fact some scientists suggested that the Big Bang might have been one massive white hole however due to the fact that the universe is expanding and our lack of knowledge of white holes, this theory has not gained momentum.

A white hole would attract objects just like anything else due to gravity but the objects would never actually reach the center and would keep losing momentum and would need more energy to accelerate. However eventually the amount of energy needed to accelerate past the resistance would be infinite and that number cannot be reached.

Finally my thoughts, I consider white holes to be interesting yet as there is no significant data I'll have to hold on before I put my thoughts down. If a significant discovery is found then I'll be sure to re-post about this topic.

This is Mehul

Signing Out

Space Elevator - the Future of Space Travel?

Some space fanatics might know this idea first proposed by Konstantin Tsiolkosky at 1895. He proposed the idea of a tower reaching geosynchronous orbit. However to make such an elevator we would need a material that is both lighter and stronger than anything we have right now. However the developments with nanotechnologies have allowed for new materials to be created such as Carbon Nanotubes which might just be strong and light enough.


To the right is a diagram showing the system recently proposed. The climber is the elevator with the idea of centrifugal force used to keep the space elevator stable.

The benefit of having a Space Elevator is quite simple. Spaceships launched at that height would already be in space and therefore would not have to escape earth's gravitational field. Due to this they would have more fuel and would not slow down as they would be in a vacuum.

The main reason why the building of this hasnt even started is again simply the price. Due to carbon nanotubes being a new technology, it is quite expensive and to build something on a magnitude of a space elevator would literally cost an unimaginable amount therefore for now there is not enough support but I honestly see this happening quite soon.

In fact, a Japanese company actually plans to have it built by 2050. Obayashi Corp has quite the inspiring goal to have it built soon and I wish them all the luck in succeeding.

Below is another picture detailing the concept behind it. May we all one day be able to take an elevator to space.

This is Mehul, Signing out.

Antimatter

My first post in a long time (Sorry Guys). Today, I will be talking about antimatter which is the "opposite" of matter per say.

Before we go into antimatter, lets look into what matter is made of. Matter is made of 'atoms and molecules' which contain protons, neutrons and electrons. These are made up of different kind of quarks such as up quark, down quark and strange quark to name a few. So technically, we can say that matter is made of particles such as quarks.

Anti-particles are basically particles which have the same magnitude for their properties but have the opposite sign for the specific elementary particle. For example, a positron has a charge of +1e with the same mass of an electron and is therefore considered as the antiparticle of the electron.

Matter and antimatter are said to annihilate (completely) into energy if they come in contact. For example, let's say a mass of 10kg antimatter is coming towards earth. When the antimatter comes in contact with earth(made of matter) 10kg of earth will be destroyed along with 10kg of antimatter and energy will be generated. This energy can be calculated by the formula e = mc^2. Of course this implies that in this scenario, 9 * 10^17J of energy (which is a very huge amount) will be produced along with the annihilation of both the matter and the antimatter. Radioactive rays are also released but that is a topic for another day.

Currently many scientists are trying to find a way to store matter however it cannot be stored in a container as the result would be annihilation. Therefore, some scientists are trying to use magnetic and electric fields as the antimatter containers instead however success is limited.

Thanks guys and more will be coming soon on a variety of astronomy topics.

The Hand of God?

Don't you think that this amazing nebula looks like the hand of God? Some people say it is a coincidence. Is it or not is your own choice but you have to admit if it is a coincidence then it is an amazing one as it looks like god is pushing his blue hand into a pit of fire.

This nebula was formed by a cloud of gas that surrounded a neutron star called PSR B1509-58, or B1509 for short. Neutron stars will be explained in the video below, but in short it is a star that is burning out and collapsing into itself.

The photos have caused several religious debates, and at the end you have to wonder this is proof that God exists or not.

The Jade Rabbit

China will launch its first ever moon rover mission on Monday.A rocket carrying the spaceship named "Jade Rabbit" will blast off at 1:30 P.M. If successful, the launch will be an amazing help to China's space exploration programme, which aims to create a space station by 2020 and eventually send someone to the moon.

It will make China only the third nation to soft-land a spacecraft on the moon. Beijing sees its military-run space programme as a great thing to prove that China is amazing in technological research and to promote themselves. China has previously sent two probes to orbit the moon early in November, Beijing offered a look into its secretive space programme when it put a model of its moon rover on public display.

The rover was later named "Yutu", or jade rabbit, following an online poll in which more than three million people voted.The name comes from an ancient Chinese myth about a white rabbit that lives on the moon as the pet of Chang'e, a lunar goddess who swallowed an immortality pill.

Doomed European Satellite

The recent news is that a doomed European satellite is about to hit earth very soon.  The European Space Agency says that one of its research satellites that ran out of fuel will most likely crash to Earth into the ocean.

The agency said Sunday the crash is expected to occur between 6:30 at Sunday or 12:30 on Monday."with a very high probability, a re-entry over Europe can be excluded

."Spokeswoman Jocelyn Landeau said the satellite, GOCE, will mostly disintegrate as it comes down and "we will have only a few pieces which could be 90 kilograms at the most."

NASA is telling everyone to not worry because it is more likely to win the lottery 250,000 times in a row than get hit by any part of the satellite debris. This satellite had survived for triple of the time expected for it to survive

Quantum Teleportation

Going slightly of topic, I have to say that the new method of transportation called Quantum Teleportation is absolutely amazing. This was first attempted in 1997 but did not work at that time. It gives a person the ability to teleport itself or anything else. It is truly an amazing thing. Now I will let a video tell you the rest about Quantum Teleportation in detail.