planets
HOW MANY PLANETS IN THE SOLAR SYSTEM
a.7
b.8
c.9
d. some may be found
A and D
What galaxy are we in
The milky way
What is a star
a burning ball of plasma
+300
what is a black hole
a gravity well
+150
what is gravity
the force that holds things together
WHAT IS PLANET 9
A Possible 9th planet
Double your points!
What is andromeda
The largest galaxy in the local group
what is the 2nd closest star
proxima centauri
How are black holes formed
exploding stars
What is a barycenter
an invisible point witch 2 or more objects orbit
WHAT IS AN EXOPLANET
A PLANET NOT IN THE SOLAR SYSTEM
How long until the milky way and andromeda collide
A.4 billion years
B. 3.4 billion years
C. 5.5 Million years
D. 1.9 Undecillion years
B
What is the largest star
A. UY scuti
B. Stephenson 2-18
B
What is a quasar
a galactic nucleus
double points
how much gravity does earth have speaking in
astronomy
a teeny bit
What is earth
The third planet
the largest rocky planet
the only planet with life
How old is the universe
A.13.8 Billion years
B.13.7 Billion years
nobody knows
+100
What is a Protostar
A partially developed star
how strong is a black hole
Reeeeeeeaally strong in fact so strong that not even light can escape
can gravity change time
yes
HD100546 b
What is the largest planet
What are galaxies orbiting our own called
dwarf galaxies
how many stars are in the milky way
100 million
what is the largest black hole
TON 618