What is the largest star within 1,000 light-years of our solar system?
Anonymous Quiz
24%
A. Kappa
15%
B. Acinimod
20%
C. Thgrib
41%
D. Betelgeuse
Most people know that Jupiter has a "Great Red Spot". What is actually happening in the spot?
Anonymous Quiz
30%
A. A tornado
49%
B. A high-pressure storm
14%
C. A volcanic eruption
6%
D. Nothing
Which of the following is not a type of nebula?
Anonymous Quiz
32%
A. radioactive nebulae
20%
B. planetary nebulae
23%
C. dark nebulae
24%
D. reflection nebulae
Name the book written by Ptolemy.
Anonymous Quiz
25%
A. Al Ramem
33%
B. Las Universalis
29%
C. De Corpuns Ptolemis
13%
D. Almagest
β¨Stars with really strong gravity cause themselves to become smaller and smaller and eventually turn into black holesβ¨
#Blackhole
π @AstroMechanics
#Blackhole
π @AstroMechanics
β¨The Milky Wayβs super massive black hole, Sagittarius A, is around 4 million times the mass of the Sun. Some cosmologists think it could take up a region of space just 1/10th of Earthβs orbitβ¨
#Blackhole
π @AstroMechanics
#Blackhole
π @AstroMechanics
β¨Our galaxy probably contains at least 2 billion planets like earthπ.
@AstroMechanics
@AstroMechanics
β¨Gamma rays are produced in the hottest and most violent events in the universe such as the birth of a black hole. Gamma rays have the most energy of any other part of the electromagnetic spectrum, and have a wavelength shorter than the width of an atom. Gamma ray light is lethal and can easily damaging human DNA. Gamma ray light cannot be reflected with mirrors as the waves will pass right between the atoms of the mirrorβ¨
#Light
π @AstroMechanics
#Light
π @AstroMechanics
Only 5% of the universe is made up of normal matter, 25% is dark matter and 70% is dark energy. #Universe π @AstroMechanics
β¨Helium is the only substance in the universe that cannot be in solid form. It canβt be cold enoughβ¨
#Fact
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#Fact
π @AstroMechanics
Some scientists consider Cruithne to be a moon. Around which planet does it orbit?
Anonymous Quiz
36%
A. Jupiter
12%
B. Earth
35%
C. Saturn
16%
D. Mars
What type of star is the Pistol?
Anonymous Quiz
40%
A. Hypergiant
36%
B. Pulsar
14%
C. Black hole
10%
D. Not mentioned
Mira is in what constellation?
Anonymous Quiz
42%
A. Capricornus
18%
B. Cetus
22%
C. Draco
18%
D. Hercules
Stars are very hot celestial bodies. So, from Earth, how one can determine the hotness of a star?
Anonymous Quiz
13%
A. Determining its size
12%
B. Determining its shape
19%
C. Determining its mass
57%
D. Determining its colour