What is the eccentricity of an elliptical orbit?How does the shape of the ellipse affect eccentricity?
The eccentricity is a measure of how much an elliptical orbit is 'squashed'.The formula for eccentricity=distance between foci/length of major axis or.
What are the uses of polar satellites?
Satellites with polar orbits are used for monitoring the weather, military applications (spying) and taking images of Earth's surface
What is Polar Satellite?
These are low altitude satellites. This means they orbit around earth at lower heights. They orbit around the earth in North-South direction.
What are 4 uses of geostationary satellites?
1)communication, 2) TV broadcasting, 3) weather monitoring, 4) military
Which country launched the Hubble Space Telescope?
The Hubble telescope was built by the United States space agency NASA with contributions from the European Space Agency.
The Moon is a satellite.True or false?
T. Satellites can be natural, such as the Moon orbiting the Earth. Satellites can also be artificial.
What is the time period of Polar Satellite?
about 100 min
what is closest star to earth?
Proxima Centauri - is actually the nearest star to the Earth.
what is the meaning of space trash?
unwanted objects or material left in space by human activity, such as pieces of destroyed satellite
What is the temperature of space?
2.7 Kelvin
Which planet has the most number (how many) of satellites in the solar system?
Saturn has 82 moons
When and where was the first satellite launched in the world?
October 4, 1957, The world's first artificial satellite was about the size of a beach ball (d=58 cm),from Baikonur Cosmodrome.
There is no gravity in space. True or false?
F. Gravity doesn’t disappear because someone leaves the Earth’s surface. Every object in space attracted other object by the force of gravity.
Why is potential energy negative?
this is because at infinity we assume the p.e of any body =0. At distances lesser than infinity the p.e wil lesser, which will obviously be negative.
How many active and dead satellites are in space? (give approximate numbers)
While there are about 2,000 active satellites orbiting Earth at the moment, there are also 3,000 dead ones littering space
What Is an Asteroid?
Asteroids are small, rocky objects that orbit the Sun.
does kazakhstan have satellites? (how many?)
KazSat, the first Kazakh space satellite, was launched on June 18, 2006 . KazSat-2, KazSat-3
Do orbiting satellites need energy? What energy do satellites use?
Solar power is energy from the Sun, They have solar panels which convert the Sun's energy into electricity that powers the spacecraft.
All objects – even people are attracted towards each other by gravity. True or false?
T. Even people are attracted towards each other by gravity, but this force is so small that it is not noticeable.
A 1 kg mass dropped from a 100 km high tower would float away.
F. The 1 kg object would fall downwards toward the centre of the Earth.
What is the purpose of the Hubble telescope?
The telescope observes comets and planets, discovered moons around Pluto, it has helped scientists understand how planets and galaxies form.
Do all planets have satellites?
Of the eight planet's, all but two planets have natural satellites. The two that don't are Mercury and Venus.
On scale of building, gravitational field is: A)increasing B)decreasing C)uniform D)varying
C)uniform
How Many Planets are in our Solar System?
There are eight planets in our Solar System.
What is mean by geostationary satellite?
satellite which is placed directly above the Equator with a circular orbit and angular velocity identical to that of the Earth
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