Magical Space Flight - How do thing fly in space?

Why do things fly in outer space? Have you ever questioned it? Some magic is happening around there because if something wants to fly inside the limit of atmosphere there is a need of a source for lift, a source of propulsion, and many more parameters to be taken care of but once something got out there in space, it gets to fly. Come on let’s get into this and unveil the mystery.

Video Credits: Curious Droid

Orbits:-

Every thing is revolving and rotating out there but all this is happening in an order i.e. everything has a orbit in which it revolves around the sun. Do you know our solar system resembles more like an atom just a bigger sized atom. Nucleus is our sun and electrons are the planets.

What is the shape of the orbit, few people consider it to be circular but it isn't do you know why. Everything has two point perigee (when the planet is near to the sun) and apogee (when the planet is far away from the sun) this makes the orbit of the planet slightly elliptical.

Orbital Inclination:-

All the orbits do not stay straight, they are tilted slightly to get exposure. Planets characteristics are similar to human beings when a group of people are being in a photograph everyone tries to get his/her face captured this is the same scenario in the case of planets, sun is the photographer and all the planets are trying to get exposed. 

Every planet is tilted at some angle below is a table which specifically says about the angle of tilt. The official definition of Orbital inclination is that it measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a reference plane and the orbital plane or axis of direction of the orbiting object.

Van Allen Belts:-

Do you know there are two regions above earth where satellites cannot fly or if they do they must be protected from plasma .If you are planning to send a satellite up there, then better select an orbit either within the inner belt or between the inner and outer belts or above the outer belt. 

The Inner Van Allen Belt:-

It extends typically from an altitude of 0.2 to 2 Earth radii (L values of 1 to 3) or 1,000 km (620 mi) to 6,000 km (3,700 mi) above the Earth. In certain cases when solar activity is stronger or in geographical areas such as the South Atlantic Anomaly, the inner boundary may decline to roughly 200 kilometres above the Earth's surface. 

The inner belt contains high concentrations of electrons in the range of hundreds of keV and energetic protons with energies exceeding 100 MeV, trapped by the strong (relative to the outer belts) magnetic fields in the region.

The Outer Van Allen Belt:-

It consists mainly of high energy (0.1–10 MeV) electrons trapped by the Earth's magnetosphere. It is more variable than the inner belt as it is more easily influenced by solar activity. It is almost toroidal in shape, beginning at an altitude of three and extending to ten Earth radii 13,000 to 60,000 kilometres (8,100 to 37,300 mi) above the Earth's surface.

Every thing is dark and empty out there:-

It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays. In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces.

Dark Matter

It is an unidentified type of matter distinct from dark energy, baryonic matter (ordinary matter), and neutrinos whose existence would explain a number of otherwise puzzling astronomical observations.

Dark Energy

It is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe.