Grief sucks: An encore performance

Image: Screenshot from ScienceAlert.com

The planet hunters found an earth-like exoplanet orbiting the star 40 Eridani A, which is written into some of the original Star Trek novels (Suck it, J. J. Abrams) as the star orbited by the planet Vulcan. And after posting the link several places, I realized that I can’t come home and tell Dad, who I watched the show with first, nearly 50 years ago.

#griefisabitch

A billion years as a day

My existential and cosmological ramblings with a little dab of Zen and science.

betelgeuse
Betelgeuse, Credit ESO/Digitized Sky Survey 2. Acknowledgment: Davide De Martin.

Stars are a good reminder of how the universe is all one and there is only now. This is a photograph of the star Betelgeuse, the 2nd brightest star in the constellation of Orion. It’s nearing the end of its life and has been showing signs that it’s ejecting matter from its surface. It’s a red supergiant nearly 12 times the mass of the Sun, and it is roughly 650ly from us. Light takes 650 years to reach us. Changes on its surface are that old. Astrophysicists are watching for evidence of a supernova.

So let’s forget all that for a moment and look at it from the perspective of 18th Century astronomy. We’re out at night looking at Orion. We’re tracing lines from the feet up to the belt, up the tunic to the shoulder of the  arm that’s drawing the bow. And up at the left at the shoulder of the huntsman we see a star that can look pinkish at times.

And a minute later the star explodes.

We take out a notebook and make notes. We describe what we see in every way we can. We write about it for days until it stops being visible in daylight. From where we are in the 1700s the star just blew up. We don’t know about c, or concepts like light-years. We don’t understand that the actual explosion happened sometime in the 11th century during the crusades. This is all happening ‘now.’

And even today, with all our understanding of theoretical astrophysics, whatever we observe, in a sense, is happening in real time…because now is all there is.

Looking for life out there

We have a cloud of artificial satellites, paint chips, nuts, bolts, wrenches and other junk orbiting our planet. Astrophysicists are looking in what is called the “Goldilocks Zone” for planets with water-dependent life. So I was watching this video put out by the American Museum of Natural History and I was thinking that maybe the key to finding life out there is to refine our search to planets in the “Goldilocks Zone” with lots of gadgets and stuff swirling around them.