Are there particles that move backwards in time?

Hypothetical superluminal particles called tachyons have a spacelike trajectory, and thus can appear to move backward in time, according to an observer in a conventional reference frame.

Is anti matter the opposite of matter?

Antimatter is the same as ordinary matter except that it has the opposite electric charge. A positron is a particle with the same mass as an electron but a positive charge. Particles with no electric charge, like neutrons, are often their own antimatter partners.

Are positrons real?

The positron is real and can be observed in many experiments. When an electron and a positron annihilate, the result is a pair of photons. No black holes are involved.

Can we create antimatter?

For the past 50 years and more, laboratories like CERN have routinely produced antiparticles, and in 1995 CERN became the first laboratory to create anti-atoms artificially. But no one has ever produced antimatter without also obtaining the corresponding matter particles.

Is antimatter just like matter that goes backwards in time?

Some sources describe antimatter as just like normal matter, but “going backwards in time”. What does that really mean? Is that a good analogy in general, and can it be made mathematically precise? Physically, how could something move backwards in time?

What would happen if you were made of anti-matter?

It would be a logical and sociological goldmine if anti-matter people living on an anti-matter world were all Benjamin Buttons, but at the end of the day if you had a friend made of anti-matter (never mind how), you’d age and experience time in exactly the same way. You just wouldn’t want to hang out in the same place.

How does anti-matter interact with the weak force?

Matter’s interaction with the weak force is “handed”. When emitting beta radiation (a weak interaction) matter and anti-matter are mirrors of each other. Parity and charge are how anti-matter is different from matter.

How does an anti-particle behave in the past?

In physics, whenever you’re trying to figure out how an anti-particle will behave in a situation you can always reverse time and consider how a normal particle traveling into the past would act. “Anti-matter acts like matter traveling backward in time”.