Recent content by Don M

I wonder if helicopters on future Mars landers could blow dust off the solar panels and save missions like InSight. Might be worth practicing!

Hmmm, according to this article and the statement from Kobe University, the impact on Ganymede precedes the formation of both our Solar System and our Universe: 40 billion years(!). Need some better editors.

I wish this article had gone deeper, even in following up its title. For example, 1. Why would early-formed exoplanets (of what type?) be more likely to develop plate tectonics? 2. Why would a hot core inhibit creation of a magnetic field?

The barycenter of the Solar System does not move as the result of the revolution of its own planets, etc. Yes, this position is the center-of-mass of the entire Solar System - the Sun, too, moves around it even though that position lies outside the Sun's volume. (BTW, this is one technique...

By definition, the Solar system's barycenter cannot "constantly change position as the planets move around the Sun." The NASA Space Place link inside this article (https://spaceplace.nasa.gov/barycenter/en/) is inconsistent and flawed. This Space.com article promotes a misconception.