science

Scientists are simply adults who ...

Scientists are simply adults who retained and nurtured their native curiosity from childhood.

~ Neil deGrasse Tyson

If we long for our planet to be important ... alvin August 1, 2019 - 10:40am

“If we long for our planet to be important, there is something we can do about it. We make our world significant by the courage of our questions and the depth of our answers.”

~ Carl Sagan, Cosmos (via @WorldAndScience)

Hubble telescope uncovers black hole that shouldn’t exist

From NASA.gov: As if black holes weren't mysterious enough, astronomers using NASA's Hubble Space Telescope have found an unexpected thin disk of material furiously whirling around a supermassive black hole at the heart of the magnificent spiral galaxy NGC 3147, located 130 million light-years away.

The conundrum is that the disk shouldn't be there, based on current astronomical theories. However, the unexpected presence of a disk so close to a black hole offers a unique opportunity to test Albert Einstein's theories of relativity.

Can snakes see?

I’ve seen five rattlesnakes since I moved to Colorado, four dead and one that was quite upset with me. As I was walking yesterday I wondered, can snakes see? Here’s an answer from animals.howstuffworks.com.

LiveScience.com adds this information: “With the exception of a few species that have adapted to daytime hunting, most snakes do not see well. Generally they can see shapes but not details. Snakes called pit vipers can see well at night by an amazing trick. Their pits (one on each side of the head) sense heat (infrared light) like night vision goggles. These pits, not eyes, actually are thought to render images of prey in the snakes’ brains.”