NASA's MAVEN Mission Briefing: How Mars lost its atmosphere

[LongTomH]

This video didn't cover the revelation that MAVEN also determined that Mars could have some gorgeous aurora displays

[packman]

1. Interesting - did or does Mars have a molten core?

Earth's molten iron core is responsible for the mag field. Wonder why Mars doesn't have one? Was earth hit with more iron-bearing meteors during its formation?

[LongTomH]

2. Interesting questions! I'm not certain of the answers.

The old assumption was that, planets forming nearer the center of the solar nebula would contain more heavy elements, like iron and nickel. Right now, all the old assumptions are being challenged as we discover more and more exoplanet systems.

[Spitfire of ATJ]

5. More likely the original "soup" had iron that sank to the bottom.

[zebonaut]

3. Republicans are already debunking and denying this as a hoax

See; its Liberals that like Bob Dylan

[LongTomH]

4. I expected Rush Limbaugh to weigh in on this!

I suppose I shouldn't be surprised if the rest of the Republican party joins in. Science denial is epidemic in the GOP of today.