Imperial Valley Press

Among Jupiter and Mars

- RICHARD RYAN Richard Ryan lives in El Centro and welcomes your comments at rryan@sdsu.edu

You may have noticed Mars in the southern night sky. It was much brighter and closer to earth at the end of July. But it is still very bright. This is because it is presently only 33 million miles from Earth. You laugh. Just a drive past the moon. Well, Mars has a varying orbit around the sun, and a Mars circumnavi­gation of the sun takes two Earth years. It can be as far from Earth as 200 million miles so presently it is in a much closer orbit.

In Friday’s presentati­on by amateur astronomer Mike Rood, he noted that Mar’s closeness to Earth is pretty rare, every 15 to 17 years.

Mike and Imperial Valley Desert Museum Director Dr. David Breeckner treated us to NASA web pages on Mars exploratio­n. At one point, they pulled up a web page of a live space walk from the Internatio­nal Space Station. It was as if we just dropped in for a quick look. Pretty amazing stuff, and how quickly we take these technologi­cal advances for granted. The view of Earth was amazing as the space station orbited the third planet from the sun.

By the way, Mars is the fourth and thus our neighbor. See Mars-in-a minute from JPL and NASA: https:// www.jpl.nasa.gov/edu/teach/activity/mars-in-a-minute/

America has lots of worldwide economic competitor­s. China is in lane two and gaining fast. Yet, America’s technologi­cal prowess is second to none. The Internatio­nal Space Station is truly a cooperativ­e effort, but America’s space technology is primo.

But back to Mars. On a good day, it would take 10 months to get there. The rockets exist to make the trip. However, Mars’ atmosphere is hostile to Earthlings as you might remember from the movie, “The Martian.” Matt Damon had a tough time after being mistakenly left behind by the first manned mission to Mars. He became The Martian since he was the first to grow a crop of potatoes, survival food, and thus technicall­y colonize it. Well, he was the first Martian we know of. And, yes, the book, “The Martian,” was even better than the movie, though the cinematic scenes of Damon driving the rehabilita­ted rover across the planet were out of this world.

Elon Musk of Tesla and Space X fame suggested a few years ago to terraform Mars, making it more earthlike, by exploding thermonucl­ear weapons at its poles and melting ice. The average Martian temperatur­e is similar to Antarctica in the winter. Sunlight is weaker there.

Ah, but a blogger asks, what to do about all that radiation from an exploded weapon? Another blogger wrote that exploding nuclear weapons would only p*** off the aliens. The White House has already made enough enemies worldwide without extending ill will to other planets.

In the movie, “Independen­ce Day,” the president successful­ly rallies pilots, including the Imperial Valley crop dusters, to fight the invading space ships. Not sure the rallying cry would work this time. The response might be, America, you can go first!

We looked at a bunch of planets while at the Desert Museum. The skies are clearer in Ocotillo. Less light pollution. Jupiter was close to the moon. Venus was in the western sky. Even with binoculars, the craters of the moon were visible along the line dividing light and dark.

And as Mike Rood had mentioned in his talk, we could see Antares in the southweste­rn sky. Antares is a dying red super giant star. Like Mars it appears red, but unlike Mars, it is incredibly distant. It is about 620 light years from Earth in the Scorpius constellat­ion. Kinda makes Earth seem like a grain of sand in the universe, a very beautiful grain of sand, when you look up and see billions of stars.

So, as Sinatra sang, “Fly me to the moon. Let me play among the stars. Let me see what spring is like on Jupiter and Mars.”

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