Geography, 10.10.2019 18:00, uticabadgirl
Protoplanetary disks are collections of gravitationally bound gas and dust where stars and planets are formed.
(a) what are the 4 main types of materials that compose protoplanetary disks? and what are their typical relative abundances?
(b) why did the terrestrial planets form close to the sun, and gas giants form far away from the sun?
(c) how do we reconcile the existence of "hot jupiters," which are commonly found around distant stars, with nebular theory?
Answers: 3
Geography, 22.06.2019 17:00, anjumuddin9
Why is the improved education of girls so important, especially with regard to economics and health? what are the leading causes of death among teenage girls in africa and how are they tied to education?
Answers: 3
Geography, 23.06.2019 02:10, jarednash015
Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction
Answers: 1
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