Astronomy - Graphic Flashcards
___________ that filled the universe a mere second after the big bang make up a third component of the cosmos alongside dark matter and dark energy.
New Scientist 14 April 2018
Neutrinos
Moments after the ___________ our universe was a seething sea of particles, packed together and constantly bouncing off one another. Among the first to break free from this dense plasma as the universe expanded were neutrinos, which then formed the cosmic neutrino background. These neutrinos are everywhere but impossible to detect because of their low energies.
New Scientist 14 April 2018
big bang
According to the ____________, about 30,000 years after the big bang, random quantum fluctuations led to some regions having more dark matter than others. Normal matter gravitationally fell towards these pockets only to rebound away as photons in the dense plasma pushed against particles of matter. Thin dense shells of normal matter began speeding away from each pocket of dark matter like sound waves from a popped balloon.
New Scientist 14 April 2018
Standard model of cosmology
Shells of neutrinos did the same. These were larger than the shells of normal matter because neutrinos are lighter and travel faster. The ________________ of the neutrino shells subtly changed the size and shape of the shells of normal matter.
New Scientist 14 April 2018
Gravitational influence
When the universe cooled enough to stop both types of shells from propagating outward, about 380,000 years after the ________, they were frozen in time. The shells became regions where more galaxies eventually formed because they were denser than other areas of space.
New Scientist 14 April 2018
Big bang
As many as 10,000 black holes may be buzzing around the centre of the Milky Way galaxy.
The galactic centre is known to host a humongus black hole called _____________ whose mass is equivalent to 4 million suns
New Scientist 14 April 2018.
Sagittarius A*
As many as 10,000 black holes may be buzzing around the centre of the Milky Way galaxy.
The galactic centre is known to host a humongus black hole called Sagittarius A* whose __________ is equivalent to 4 million suns
New Scientist 14 April 2018
mass
As many as 10,000 black holes may be buzzing around the centre of the Milky Way galaxy.
The galactic centre is known to host a humongus black hole called Sagittarius A* whose mass is equivalent to ____________.
New Scientist 14 April 2018
4 million suns
