Chapter
The Composition of the Earth's Core
33:37 - 39:34 (05:56)
The Earth's core is made up of a solid inner core and a liquid outer core, both primarily composed of iron. Mars has a weak magnetic field, which is one reason why its core is thought to not be molten like Earth's.
Clips
The Earth's core is composed of iron in two parts, a solid inner core and a liquid outer core, with a radius of about 2,200 miles.
33:37 - 35:48 (02:10)
Summary
The Earth's core is composed of iron in two parts, a solid inner core and a liquid outer core, with a radius of about 2,200 miles. Mars' core, on the other hand, is much smaller and made up of iron and magnesium silicate, with a radius between 900 and 1,200 miles and a weaker magnetic field.
ChapterThe Composition of the Earth's Core
EpisodeSelects: How Mars Works
PodcastStuff You Should Know
This podcast explains how volcanoes and earthquakes are formed due to the drift and movement of Earth's crust and rubbing of tectonic plates.
35:48 - 37:18 (01:29)
Summary
This podcast explains how volcanoes and earthquakes are formed due to the drift and movement of Earth's crust and rubbing of tectonic plates. The absence of active volcanoes at present is also discussed.
ChapterThe Composition of the Earth's Core
EpisodeSelects: How Mars Works
PodcastStuff You Should Know
Terraforming Venus could make it habitable in tens of thousands of years by artificially stimulating the formation of its thin atmosphere to block solar radiation and create a suitable environment for water.
37:18 - 39:34 (02:15)
Summary
Terraforming Venus could make it habitable in tens of thousands of years by artificially stimulating the formation of its thin atmosphere to block solar radiation and create a suitable environment for water.