Astronomy page 14

Saros cycle and Exeligmos

Eclipses of the Moon and Sun are synchronized in a Saros cycle and even better in a cycle

Chariklo asteroid (10199) and its 2 rings

Chariklo and its two amazing rings

Radioactivity of the Earth

Radioactivity of the Earth

Diversity of solar system objects

Tourist travel in the solar system

Escape velocity to small objects to the balck holes

Escape velocity

Dark nebulas

Hubble constant

Hubble constant and expansion

Frost line or ice line or snow line in the solar system

Frost line in the solar system

Aberration of light

Effects of aberration of light

Cluster of galaxies El Gordo

The heavier cluster of galaxies, El Gordo...

énergie noire

The dark energy is necessary

atomic or electronic orbitals

The image of the atom or the first electronic orbital of the hydrogen atom

Composition of interstellar dust

Composition of interstellar dust

synchronous and geostationary orbit

How to calculate synchronous orbit?

Living on Mars

Living on Mars is a dream

Gravitational waves BICEP2

Gravitational waves

See the exoplanets

Turn off the stars and see the exoplanets

Kepler-186 system

The habitable zone of Kepler-186

Beyond our senses, the great scientific revolutions

Beyond our senses

Einstein ring and Einstein cross

Einstein ring and Einstein cross

Free flight into space

With or without horizon, where is the space?

geostationary satellites

Where is the geostationary orbit?

Roche limit

Roche limit or limit not to exceed

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