Today’s insights and commentary from the world’s leading scientist’s on Twitter and YouTube postings on astronomy, physics, biology, evolution, SETI, cosmology, genetics, and climate change.
In 2015, astronomer Tabetha Boyajian and her colleagues reported on a star 1,400 light-years away that occasionally dimmed. Actually, it dimmed a lot, and this wasn’t normal stellar behavior. One explanation was that the star was surrounded by a Dyson sphere. The idea, proposed years ago by physicist Freeman Dyson, is that really advanced aliens would construct a gargantuan, spherical swarm of solar panels in orbit beyond their own planet gathering enough starlight to energize the aliens’ terrestrial lifestyles, and could sometimes get in the way of light from the star, causing it to intermittently dim as seen from afar.
Vulcans, Daleks, Martians, Grays – our culture is pervaded by alien beings from distant worlds – some benevolent…most not so much, observes the BBC: “In our galaxy alone, there should be tens of billions of planets harboring life, but we have not heard any broadcasts or seen any flashing lights from distant civilizations. Sixty years ago, the journal Nature published a paper suggesting the best way to search for alien life was by listening for radio signals. Within months, astronomer Frank Drake had begun scanning nearby star systems and SETI was born.”
“The spreading of intelligent life from one star system to another would probably not appeal to truly intelligent creatures,” says Frank Drake, former Director of the Carl Sagan Center for the Study of Life in the Universe, and creator of The Drake Equation that revolutionized the search for intelligent life in the cosmos.