Big Bang
Everything - even time and space - came into existence with the Big Bang. True or false?
True
How long does it take light from the sun to reach the earth?
Approximately 8 minutes and 18 seconds
Made the geocentric model
Ptolemy
A large grouping of stars
galaxy
4th century B.C. Greek theologian who came up with the idea of geocentrism
Aristotle
According to the Big Bang model of cosmology, our universe started as an infinitely hot, dense point ...
13.8 billion years ago
Which planet is closest to the sun?
Mercury.
Made the first accepted heliocentric model
Copernicus
A galaxy with no defined shape
Irregular Galaxy
1st century B.C. ______ predicted the paths and velocities of the planets
Ptolemy
What happened during the Big Bang?
Big Bang nucleosynthesis had left the universe with roughly 75% hydrogen nuclei, 25% helium nuclei, and trace amounts of lithium and deuterium nuclei. The plasma of positively charged nuclei and negatively charged free electrons filled the universe, trapping photons in its midst. (It was the first thing that popped up when I searched for the answer)
What is the sun made out of?
The Sun is, at present, about 70% hydrogen and 28% helium by mass everything else amounts to less than 2%
Invented physics and calculus
Newton
flashes of gamma rays associated with extremely energetic explosions in distant galaxies
Gamma Ray Bursts
Galileo was only able to further observe the night sky using the __________
Telescope
What is the evidence for the Big Bang?
Cosmic Microwave Background
What powers the sun?
Fusion, the same as a hydrogen bomb.
Stared at the sun and died blind because of it
Galileo
What is the smallest star in the universe
OGLE-TR-122b
In the 17th century, Galileo proved _________ using a new invention
heliocentrism
What is the currently most accepted model for the Universe?
Big Bang Model
How old is the sun?
About 5 billion years.
best known for his laws of planetary motion, and his books Astronomia nova, Harmonices Mundi, and Epitome Astronomiae Copernicanae.
Kepler
the largest star known
VY Canis Majoris
Galileo improved the design of the instrument (telescope) he used by ________________
grinding his own lenses