Antineutron

The antimatter equivalent of a neutron. Just like neutrons, antineutrons have no charge. However, antineutrons are made of antiquarks, which have the opposite charges of a neutron's quarks; as such, neutrons and antineutrons will annihilate upon contact.
Antineutrons have the same mass and charge as a neutron.
by Pie Stealer October 27, 2015
mugGet the Antineutronmug.

is this guy for real

What you ask other people when you hear something so stupid, you cannot properly comprehend it
English teacher: You're grammar could be improved.
Me: Is this guy for real?
by Pie Stealer January 10, 2015
mugGet the is this guy for realmug.

Major Tom

A person who cannot hear you, no matter how many times you repeat their name. The term is derived from the song Space Oddity.
Person 1: "Can you hear me Major Tom?"
Person 2: "Yes, I can hear you!"
by Pie Stealer March 08, 2015
mugGet the Major Tommug.

Big Bang

A cosmological model for the Universe, describing an event billions of years ago that allowed for the existence of atoms and life. It is commonly misunderstood by ignorant people who think it began at a single point in space, appeared out of nowhere or was an explosion.

The Big Bang actually refers to a point in the Universe when it was extremely dense, but infinitely large. About 13.8 billion years ago, matter in the Universe was much closer together and space was mostly filled with an opaque plasma of light and electrons (the Photon Era). As a result, everything was unimaginably hot, and some scientists think that this heat led objects to move away from each other (hotter things expand).

While there may have been infinite matter, there is even more space through which objects can move apart. This allowed matter to continue moving away from other matter and, as a result of the expansion, the Universe began to cool down. Atoms were able to form and eventually stars and galaxies followed. In essence, one can say the Big Bang occurred everywhere; all matter moved away from each other in the tightly packed Universe.
Ignoramus: the big bang was impossible, matter can't explode from nothing!1!
Scientist: Ugh...
by Pie Stealer September 04, 2016
mugGet the Big Bangmug.

Mango

The greatest fruit known to mankind. People worship it as the food of the gods, and it can bring hapiness to anyone. It is impossible for someone not to love it. Go buy a mango, now.
Person 1: "Hey, what are you eating?"
Person 2: "Oh, a mango"
Person 1: "Give it to me"
by Pie Stealer February 03, 2015
mugGet the Mangomug.

Positron

The antimatter equivalent of an electron. It has the same mass as an electron, but opposite charge (positive). Both electrons and positrons are created by photons through a process called pair production. Positrons are sometimes called "antielectrons".
When a positron and electron orbit one another, they make positronium before annihilating shortly after. A positronium atom can bond with hydrogen to make positronium hydride, or with another positronium atom to make di-positronium.
by Pie Stealer October 27, 2015
mugGet the Positronmug.

Antiproton

The antimatter equivalent of a proton. It has the same mass as a proton, but opposite charge (negative).
When a proton and antiproton orbit each other, they make protonium. When an antiproton and electron orbit a helium nucleus, they make antiprotonic helium.
by Pie Stealer October 27, 2015
mugGet the Antiprotonmug.