# data[].attributes.headline
#10. What evidence is there that comets were not big contributors to Earth's oceans

# data[].attributes.subject
#10. What evidence is there that comets were not big contributors to Earth's oceans

# data[].attributes.body
Heavy water carrying comets are rich in deuterium, and if a comet's collision(s) were a source of our oceans, the water would be rich in deuterium, which they are not.

# data[].attributes.headline
#9. Why couldn't there have been oceans during Earth's earliest years?

# data[].attributes.subject
#9. Why couldn't there have been oceans during Earth's earliest years?

# data[].attributes.body
Heat released from asteroids and comets hitting Earth restricted the formation of oceans.

# data[].attributes.headline
#8. What is 1 scientific explanation for the origins of our oceans, and what is the evidence?

# data[].attributes.subject
#8. What is 1 scientific explanation for the origins of our oceans, and what is the evidence?

# data[].attributes.body
As earth cooled, H2O produced from outgassing could exist as liquid during the early Archean period, which could've allowed oceans to form.

# data[].attributes.headline
#7. What was Earth's second atmosphere probably like, and what was its origin?

# data[].attributes.subject
#7. What was Earth's second atmosphere probably like, and what was its origin?

# data[].attributes.body
Earth's second atmosphere contained H2O, CO2, SO2, S2, Cl2, N2, H2, NH3, and CH4. The origin of Earth's second atmosphere is that it was produced by outgassing from volcanoes.

# data[].attributes.headline
#6. Why was Earth unable to hold its first atmosphere?

# data[].attributes.subject
#6. Why was Earth unable to hold its first atmosphere?

# data[].attributes.body
Earth's first atmosphere mainly contained H2 and He, and were most likely lost to space due to the fact that Earth's gravity couldn't hold  onto lighter gases.