Characteristics of comets

In addition, comets can carry the names of the people who discovered them, e.g., comet Halley, comet Machholz, comet shoemaker–levy 9 comet or Mac Note.

Movement and spatial distribution

All comets are members of the Solar system. They, like the planets, are subject to the laws of gravity, but move very peculiar. All the planets revolve around the Sun in one direction (which is referred to as “direct” as opposed to “reverse”) on nearly circular orbits that lie roughly in one plane (the Ecliptic), while comets move in both forward and reverse directions on highly elongated (eccentric) orbits, inclined at different angles to the Ecliptic. It is the nature of motion immediately gives the comet.

Long-period comets (orbital period greater than 200 years) come from regions located thousands of times further than the most remote planets, and their orbits are tilted at all angles. Short-period comets (period less than 200 years) come from the region of the outer planets, moving in the forward direction for orbits lying close to the Ecliptic. Continue reading

Coma of the comet

The comet’s coma or head of the comet . is a fuzzy mist surrounding the actual nucleus of the comet. Including the tail, the coma is all we actually see, watching the comet from the Earth.

The shape and structure of the comet’s coma

The shape of the coma can vary from comet to comet and for the same comet during its passage, depending on its distance from the Sun and the corresponding quantities of dust and gas. Pale or bright comets producing little dust and often have a round shape, and comets that produce a significant amount of cometary dust have fan-shaped or parabolic shape.

This is due to released different-sized dust grains: those that are bigger are moving to the left along the trajectory of a cometary orbit, and the smaller particles are repelled from the Sun using light pressure.

Coma has 2 main components: gas-shell and shell dust. In fact, scientists believe that comets produce almost the same amount of gas and dust. Continue reading

Sport in space begins with a football in zero gravity

So, according to the company, Space Island Group, might look like orbiting the stadium. The game tourists in the ball channels could broadcast live .

Weightless — what is not a reason to invent a whole new class of sports? After all, space sports of one type or another, more than likely. Especially due to the rapid development of the private aerospace business and the increased number of space tourists. Is it any wonder that competition in zero-gravity invented today?

If we talk about professional cosmonauts or astronauts, sports games in orbit for them is obvious. Given the fact that in the future the crews of the expand, and the missions will be very long, like missions to the moon or Mars.

A peaceful “battle” with each other under conditions of zero gravity could help space travelers not only to diversify the flight, but also to maintain health, physical and mental. But for space tourists sport in space can be a great added attraction. Continue reading

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