21 (5)

Question 1

Answer 1

R 2

Question 2

When the Milky Way Galaxy was young, the stars that formed did not contain many heavy elements like …………..

Answer 2

iron

Several generations of star formation and star death were required to enrich the interstellar medium for subsequent generations of stars.

Question 3

Lots of stars found with plants inside mercury’s orbit which does not exist in our. now we are thinking we are the different

Answer 3

it is believed now that Jupiter might migrated inward causing maybe planets inside mercury to plumpt into the sun

Uranus and Neptune were formed where Jupiter and Saturn are now but then been kicked out to larger distances through gravitational interactions with their neighbors.

Question 4

While thousands of exoplanets have been discovered in the past two decades, every observational technique has fallen short of finding more than a few candidates that resemble ………..

Answer 4

Earth