Catalogue by Emilio Fontes

Nebulae

efonte — 2024-09-17 20:00:34 UTC

Nebulae are made of dust and gases—mostly hydrogen and helium.

HR Diagram

efonte — 2024-09-17 20:02:54 UTC

It is a very useful graph because it can be used to chart the life cycle of a star.

Giants

efonte — 2024-09-17 20:04:25 UTC

Over time, as the outer layers of the star expand, gravity causes its core to shrink and contract.

Planetary Nebulae

efonte — 2024-09-17 20:06:02 UTC

There are believed to be about 20,000 objects called planetary nebulae in the Milky Way Galaxy

Main Sequence Star

efonte — 2024-09-17 20:07:32 UTC

Main sequence stars make up around 90% of the universe's stellar population.

Nova

efonte — 2024-09-17 20:09:07 UTC

A nova is a star that temporarily increases in brightness, but it's not actually a new star.

Supernova remnants

efonte — 2024-09-17 20:10:15 UTC

They are the main source of most heavy elements, from oxygen on up.

White Dwarf

efonte — 2024-09-17 20:11:24 UTC

White dwarfs can have temperatures exceeding 100,000 Kelvin, or about 179,500 degrees Fahrenheit.

Supernova

efonte — 2024-09-17 20:12:40 UTC

Supernovae are considered one of the original sources of the elements heavier than iron in the Universe.

Diffuse nebulae

efonte — 2024-09-17 20:14:03 UTC

Diffuse nebula are the clouds of material formed from the explosions of population three, population two stars, and the left over hydrogen and helium from the Big Bang.

Super Giants

efonte — 2024-09-17 20:15:26 UTC

One supergiant can be as bright as a million Suns. The colour of supergiants can be red or blue.

Black Hole

efonte — 2024-09-17 20:16:31 UTC

Black holes are invisible to the eye because they are as lightless as the space around them.