Please enable JavaScript.
Coggle requires JavaScript to display documents.
Fundamentals of Astronomy - Coggle Diagram
Fundamentals of Astronomy
What is astronomy?
protoplanetary disk
galaxies
spiral
elliptical
irregular
Andromeda's nebula
the best place for astronomical observations is the high-mountainous desert
there are 88 constellations across the sky
bright night lighting complicates astronomers' work
supernova is the explosion of a massive star
Betelgeuse is a supergiant star in the constellation Orion
asterism is a characteristic figure of bright stars, easily recognizable and having its own name
inhomogeneity of the atmosphere spoils the image at the ground telescope
Composition of the universe
the universe is made of ->
21% of dark matter
74% of dark energy
5% of normal matter
4% of hydrogen and helium
0.5% of stars
0.3% neutrinos
0.03% of heavy elements
The red shift of lines in the spectra of galaxies is explained by the Doppler effect
the largest member of the local group of galaxies is the spiral galaxy Andromeda Nebula
background microwave (relic) radiation is the cooled radiation of the Big Bang
stars form from cold interstellar gas
The mass of the Earth is 333,000 times less than the mass of the Sun
The relic radiation received by radio astronomers was born when the age of the universe was 400,000 years
Optical telescope
adaptive optics system compensates for atmospheric image distortion in real time
the clarity of the image given by a large telescope is mainly determined by the state of the atmosphere at the observation point
mountain peaks on islands in the ocean are recognized as the best places to install telescopes
Neoptical astronomy
solar system
Mercury, mass 0,055
Sun, mass 332 940
Venus, mass 0.815
Earth, mass 1,0
Moon
Mars, mass 0,107
Phobos
Deimos
Jupiter, mass 318
Ganymede
Callisto
Io
Europa
total 79 pieces as of 2019
Saturn, mass 95
Titan
Rhea
Iapetus
Dione
Tethys
Enceladus
Mimas
total 82 pieces
Uranus, mass 14,6
total 27 pieces
Neptune, mass 17,2
total 14 pieces