“… there are no major technological barriers keeping us from harvesting the resources of the Moon and asteroids. All the barriers are financial.”
Opportunities to see Mercury are rare. Right now, it is reaching its greatest elongation and is in an optimal position for viewing shortly after sunset.
February 2020 presents a good evening showing of Mercury for the Northern Hemisphere. This world will appear over the sunset point on the horizon as dusk gives way to nightfall for the next few weeks.
Twice each day, something strange happens to the atmospheric pressure on Mars.
So many odes to Oppy are popping up today. It’s heartening to see the influence this tough little robot had on so many.
Image: Opportunity at its final resting place in Perseverance Valley, courtesy of NASA
“Writing science fiction is a race between the author’s imagination and the progress of science and history.”