Did Pluto Go in a black hole?

Researchers from Harvard University have published a paper that explores the possibility that our solar system is home to a tiny, ancient black hole. For decades, the solar system had nine official planets, but Pluto was kicked out of the planet club and demoted to dwarf planet status.

Are there black planets?

TrES-2b is an extrasolar planet orbiting the star GSC 03549-02811 located 750 light years away from the Solar System. The planet has been identified in 2011 as the darkest known exoplanet, reflecting less than 1% of any light that hits it.

What happens when a particle and its antiparticle collide?

Annihilation, in physics, reaction in which a particle and its antiparticle collide and disappear, releasing energy. The most common annihilation on Earth occurs between an electron and its antiparticle, a positron.

Do Photons have mass?

Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum. But an object with zero energy and zero mass is nothing at all. Therefore, if an object with no mass is to physically exist, it can never be at rest. Such is the case with light.

How can a photon have momentum but no mass?

This is given as a solution to the problem of only massive objects being affected by gravity. However, momentum is the product of mass and velocity, so, by this definition, massless photons cannot have momentum.

Are photons electrons?

Photons are neutrally charged, massless particles that make up light. Electrons are negatively charged, massive particles that are usually found swarming around the nuclei of atoms. In LEDs, electrons are pumped up with energy and then encouraged to release this energy in the form of photons.

Is light a photon?

Light behaves mainly like a wave but it can also be considered to consist of tiny packages of energy called photons. Photons carry a fixed amount of energy but have no mass.

Does a photon have momentum?

Particles carry momentum as well as energy. Despite photons having no mass, there has long been evidence that EM radiation carries momentum. (Maxwell and others who studied EM waves predicted that they would carry momentum.) It is now a well-established fact that photons do have momentum.