The Space Thread!
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GRtak
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In a first test of its planetary defense efforts, NASA's going to shove an asteroid
NASA is about to launch the first mission of its new planetary defense office. A spacecraft will attempt to knock a small asteroid off course by ramming into it.
www.npr.org
No nukes? Awwww! ?
GRtak
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You'll have the best view of the Geminid meteor shower overnight Monday
Although the moon will brighten up the sky and make it harder to see the Geminids this year, astronomers say from about 2 a.m. to sunrise, no matter your time zone, will be prime viewing time.
www.npr.org
NecroJoe
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I'm sure this is super common knowledge that I just never picked up on, but...
The orbiting altitude of the Hubble telescope is about 350 miles.
But the orbiting distance of the new James Webb satellite will be about 1,000,000 miles.
I had no idea it was going to be that far out.
The orbiting altitude of the Hubble telescope is about 350 miles.
But the orbiting distance of the new James Webb satellite will be about 1,000,000 miles.
I had no idea it was going to be that far out.
narf
Sgt. Maj. Buzzkill
I'm sure this is super common knowledge that I just never picked up on, but...
The orbiting altitude of the Hubble telescope is about 350 miles.
But the orbiting distance of the new James Webb satellite will be about 1,000,000 miles.
I had no idea it was going to be that far out.
Key distinction: Hubble orbits the Earth, Webb orbits the Sun in sync with the Earth.
Is this Matt’s million mile Lexus?I'm sure this is super common knowledge that I just never picked up on, but...
The orbiting altitude of the Hubble telescope is about 350 miles.
But the orbiting distance of the new James Webb satellite will be about 1,000,000 miles.
I had no idea it was going to be that far out.
In honor of James Webb, our wreath is hexagonal!
narf
Sgt. Maj. Buzzkill
I think I counted nineteen on peak night ?? plus one Ursid a weekish later.You'll have the best view of the Geminid meteor shower overnight Monday
Although the moon will brighten up the sky and make it harder to see the Geminids this year, astronomers say from about 2 a.m. to sunrise, no matter your time zone, will be prime viewing time.
What does a certain Swiss person have to do with this?
GRtak
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The James Webb Space Telescope has started unfurling its giant sunshield
The deployment of the shade on the $10 billion telescope began Tuesday with the successful lowering of two arms known as Unitized Pallet Structures.
www.npr.org
JWST secondary mirror deployed!
In the telegram chat it was asked whether Hubble could take a picture of JWST right now so I did the math:
Basically you could see JWST but you couldn't resolve it as it would only take up 13% of a single pixel on WFC3 UVIS.
In the telegram chat it was asked whether Hubble could take a picture of JWST right now so I did the math:
Basically you could see JWST but you couldn't resolve it as it would only take up 13% of a single pixel on WFC3 UVIS.
GRtak
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NASA's James Webb telescope completes its final unfolding in space
Considered the most powerful telescope in space, the James Webb telescope has completed its deployment process. It will still be five months before it will start picking up images.
www.npr.org
GRtak
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NecroJoe
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From space, you can watch the Earth farting.
GRtak
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GRtak
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GRtak
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NecroJoe
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Something I've never once thought about, but makes sense: planets with smaller moons could have eclipses that don't entirely eclipse the sun. I wonder what one would look like if the moon is huge in comparison to the far-away sun? Would it still have an outer glow?
GRtak
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Astronomers Reveal First Image of the Black Hole at the Heart of Our Galaxy - National Radio Astronomy Observatory
The first images of the supermassive black hole at the heart of Sgr A reveal that this black hole is very different from the one at the heart of M87.
public.nrao.edu