Voyager 1 and 2 still alive!!!! 38,000 mph!

[amazinblue82]

That is something I have a hard time wrapping my head around, the idea that time goes by quicker with less gravity relative to earth. I guess that means if you live in a space station orbiting Jupiter everyone back on earth will age faster than you. Strange.

Its "true" man. Sprecial relatively. Einstein, 120 years ago.

We drowned outselves here in this threaad seven years ago: Voyager 1 and 2 still alive!!!! 38,000 mph!

In a stronger gravitational field, a clock NOT from that place WILL run SLOWER if further away from the center of that field..

LIkewise, here on Earth, time on GPS satellities runs faster that my cell phone clock does on the the ground. If the engineers didnt ccompensate for that (its a calculation per Einstein's formulas), GPS systems would not work.

The satellite is further away from the massive earth than the cell phone.

Its not a theory either. They sychonized clocks on earth, put ONE in oribit, and broought it back, and compared elapsed time.

BTW, the FASTER one accelerates away from the (you need relativistic speed to see the greatest effect, and you need to come back where you left) , vs. someone here on earth, the one accelerating ages MORE slowly that the one who stayed on earth.

One twin comes back year later, and a year older, and his "brother" has aged DECADES.

The Twins Paradox. source: What is the twin paradox theory?

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I "get it" only because the I can do math equations. Even then, i STILL don't get it

WHY this is? What is the mechanism, NOT the firggin' formula for it..

How does my body know I am accelerating vs. my ttwin, and therefore my cells age more slowlly. How da heck do my cells know what time it is? How does my cell phone "know" its on the ground, vs. the satellite.

Its been explained to me a dozen times. S*** gives me a headache

 

[Turboomni]

Bacteria on the ISS has mutated into something never seen on Earth

 

[amazinblue82]

Bacteria on the ISS has mutated into something never seen on Earth

interesting.. maybe even scary?

i assume that things appear on earth all the time that have never been here before. it happens ON the earth, been happening here for billions of years.

the fact that it happens IN SPACE seems logical ..BUT, does that mean there is a new risk to humans BECAUSE of that fact?

In other words, for example, does mutating in ZERO-G create a "killer" bacteria that can only be combated/studied "up there" .... where we have nothing "up there" to do the epidemiology.

bring it down here, and its COVID X 10 or something, or worse. i doubt that, but hey ...?



i couldnt find anything in writing that dived into that kinda stuff... perhaps I'll wait for a sci-fi writer to take it up .

 

[Turboomni]

 

[amazinblue82]

I did a "book report" in like 4th grade (like 200 years ago) on astronomy, specifically constellations, telescopes, and such. Galaxies and nebulae were in there too.

Anyway, any space kid "nerd' like me knows about the Horsehead nebula. You need a telescope to see it, and humans have known about it for centuries. It's got cool name, and UN-like the constellations, it does resemble its namesake. A horse.

1,300 LY away (1,300 times 6,000,000,000,000 miles), it is a "dark" nebula -- cooler (temperature) gas clouds between us and hotter star forming clouds). The "horsehead" is a silhouette against a brighter/hotter background.

Jimbo showed us all something, this year, that centuries of looking at the Horsehead Nebula has not. It did it in infrared light .. nothing new .. but Jimbo's eyesight is best we ever put up there.

Just take a look at the pics and explanations at the link. You see, in infrared, increasingly ability of Webb to see THOUGH the dust. Whats IN the dust, and what's past the dust. Stars (spikey-looking images) and more galaxies (elongated "smudges") that you can count.

The video zooms in from LY away to extreme closeup in like 90 seconds.

source: JWST uncovers new secrets within the Horsehead Nebula. Takes about 15 minutes to read if you have time.

 

[amazinblue82]

Four minute video at the red link at very bottom, about a trip you could NEVER return from.

What if you could fly into a black hole (assuming we could ever get to one -- closest one is 26,000 years away if you're going 670 million mph -- but that's another topic)?

Before you get "spaghetti-fied", some crazy visuals are going on. Also, "time", for you and your camera and your spaceship, is doing weird stuff, compared to "time" for me (outside the black hole, watching your one way trip).

Last thing I would see of you, would resemble a "snapshot" of your ship plastered on the event horizon.

That would come from the photons that DIDNT go into the black hole WITH you. Their escape energy, for a moment, is EXACTLY equal to the gravity trying to pull them in.

Ultimately, your "snapshot" disappears as black hole gets more massive after eating stuff, therefore exerting more gravity, and eats the photons from your last image.

Take a black hole 'plunge' in this amazing new NASA visualization

 

[amazinblue82]

Hoping I am late and wrong. What goes up, must come down., as they say.

sources: Where Does Space Begin? The Kármán Line, NASA, SpaceX to Study Hubble Telescope Reboost Possibility - NASA, The unexpected connection between the northern lights and Hubble’s death

Nearly 35 years ago, we put the magnicent Hubble Telescope up there at a 600 km (orbit above earth surface). Soon, (maybe a year) without an intervention, Hubble is going for this first time go below 500 km.

At 500 km, yes, its still "in space" (its above the so-called Kármán line, a generllly-accepted/but debated convention that says earth "atmosphere" ends, and "space" begins) but its just about the point where they can't (won't?) try to move it back up to 600 km again.

You can see the "line" below - space is "black", and the "atmospheere" is everything below that. BTW, thats 62 miles up, or nearly 333,000 feet), and we humans need oxygen at only 10,000 feet.

How did Hubble "fall" nearly 100 km in 35 years. Apparently, there still is "drag" (particles hitting a spacecraft/satellite in orbit) ABOVE the Kármán line, that slows down and "sinks" space devices toward the earth.

Anyway, NASA had (has?) proposals out to private companies to come up with a plan to boost Hubble (they used Space Shuttle in the past), and therefore extend its operational life for maybe years longer.

They did it once in 1993, and once in 1997 (A little boost). Now, with no shuttle, and higher priorities they say, NASA doesnt want to spend any money, so the winning plan has to be FREE to NASA.

Esimates approximate $100M for somebody to basically get a rocket up there (easy), strap it on to the Hubble (harder) and light it (relatively easy).

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Anybody know the latest skinny? Or, is Hubble gonna get scuttled early?

 

[amazinblue82]

Moments ago. Well, they got it off the ground. Looking good so far, well on the way to the Space Station.

Happy for NASA, ULA, and Boeing, and the related space kids. Like most things we arent involved in, the space kids (all involved) gotta a lot to get right to get stuff into space.

They really are talented, dedicated, folks.

 

[amazinblue82]

Kinda like Halley's comet, in that it happens maybe once (or twice, but never more than that) in a human lifetime. This isn't a comet though, its a star going "nova".

Every 80 years or so, 3,000 light years away, last did it in 1946, expected ANYDAY now.

I wont be watching the sky everynight .. I'll let the space kids report when it goes off. Then breakout the telescope -- though anyone with good eyesight can see it with naked eye..

At my age, I certainly will never see another one .. we'll see if grand-kiddies (age 4 and 2, may get another in 80 years), as well as my own kids (mid 30's, could also in theory live for 80 more years) will sit still for viewing for the first time in all our lives.

"This is T Coronae Borealis—often shortened to T CrB—and it’s what astronomers call a nova, a word that is derived from the Latin description of these events as “new stars,” which many premodern observers assumed them to be.

T CrB last erupted in 1946, and its behavior suggests that its next paroxysm is due any moment between now and September. When this occurs, T CrB will become visible to the naked eye as a temporary jewel in its constellation’s stelliferous crown."

sources: This Dead Star Flares to Life Every 80 Years. Your Only Chance to See It Will Come Any Day Now, NASA Says T Coronae Borealis Nova Set To Create a "New Star" in a Once-in-a-Lifetime Event - The Debrief