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Astronomy Cast

Ep. 601: Unexpected Light Pollution

Astronomy Cast

Astronomy Cast

Natural Sciences, Science, Astronomy

4.83.4K Ratings

🗓️ 19 April 2021

⏱️ 26 minutes

🧾️ Download transcript

Summary

Astronomy Cast Ep. 601: Unexpected Light Pollution by Fraser Cain & Dr. Pamela Gay Day-by-day we're loosing our connection with the night sky. Already one third of humanity lives in so much light pollution that they can't see the Milky Way without a drive. And now satellite constellations are adding additional light pollution, even in the darkest skies on Earth.

Transcript

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0:00.0

A SRME Cast Episode 601 Unexpected Light Pollution

0:12.7

Welcome to a SRME Cast, a weekly fax based journey through the cosmos where we help

0:16.1

you understand not only what we know but how we know what we know.

0:19.2

I'm Fraser Kane, publisher of Universe Today, with me as always is Dr. Pamela Gay, a senior

0:24.1

scientist for the planetary sciences to do it and the director of CosmoQuest.

0:28.4

Hey Pamela, how are you doing?

0:29.4

I'm doing well, how are you doing Fraser?

0:32.1

I'm doing very well.

0:33.1

Have you seen the new pictures that NASA has sent back of Bennu, of the landing spot,

0:39.1

of Osiris Rex?

0:41.8

I had a really good laugh because they have this fabulous animation they did explaining what

0:49.7

they intended to do with the mission, which is to basically fly down with their little

0:56.7

arm and boop the asteroid Bennu and then fly away.

1:03.8

The thing is that while they're after the fact interview still showed this nice friendly

1:09.4

boop in reality Bennu punched really hard, really hard.

1:18.7

It was like on its way into the asteroid when thrusters were finally able to reverse its

1:25.9

motion after it descended half a meter, that's more than need up into the asteroid.

1:33.5

Yeah, it's like, I'm just sort of imagining it just sort of plunged its jaws into Bennu,

1:40.1

took a giant bite and then kicked itself back out and now these new pictures came up

1:46.0

from NASA like the last day or two.

1:48.4

You can see this scar on the space rock where it bit and it's so cool and it's so exciting

1:58.0

to see this whole thing now, it's time for it to come home.

...

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