Facts
The nuclear reaction that occurs
Fusion
"Stardust" consists of
All chemical elements (other than hydrogen, helium, and lithium)
The main element
Helium
The first source
Astronimate
How supernovae occur
When stars stop fusing the chemical elements that cause them to shine bright enough for people to see from Earth.
(Other) types of star explosions
Planetary Nebula, Black hole, Neutron star/pulsar
The radioactive decay that is present
Gamma
The second source
Nature noon
When supernovae were discovered
1054 C.E.
Isotopes
Helium-3 3He
Helium-4 4He
How do we know what radioactive decay is present
The small but highly energized and very hot wavelengths emitted from the supernova
The third source
Actively Learn
Supernovae were discovered by
Chinese astronomers
What makes them isotopes
Helium-3 has 2 protons and 2 electrons
Helium-4 has 2 protons and 2 electrons
The cons of supernovae
Plankton and reef communities are affected which could negativly impact them, they produce a harmful ultraviolet light
The fourth source
Open Learn
The two types of supernovae
Type 1A: white dwarf stars obtain enough mass to collapse
Type 2: Huge star loses its nuclear fuel making it collapse
Heliums natural abundances
3He=37.92%
4He=62.08%
The pros of supernovae
creates a colder climate, causes ocean mixing that is crutial to giving nutriants to biological systems, brings more oxygen into the atmosphere
The fifth source
NASA Science