Science
News . The 7 Rocky TRAPPIST-1 Planets May Be Made of Similar Stuff – Jet Propulsion Laboratory
NASA’s Jet Propulsion Laboratory, the leading center for robotic exploration of the solar system.
The seven TRAPPIST-1 planets possess similar densities the values differ by no more than 3%. This makes the system quite different from our own. The difference in density between the TRAPPIST-1 planets and Earth and Venus may seem small about 8% but it is significant on a planetary scale. For example, one way to explain why the TRAPPIST-1 planets are less dense is that they have a similar composition to Earth, but with a lower percentage of iron about 21% compared to Earths 32%, according to the…
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