Log in or Sign up

main

side

curve

In Memory of LAJ_FETT: Please share your remembrances and condolences HERE

JCC The All-New, All-Different JCC Astronomy Thread

Discussion in 'Community' started by jp-30, Jul 16, 2010.

Page 15 of 35

jp-30 Manager Emeritus VIP - Former Mod/RSA

Registered:

Dec 14, 2000

The article mentions nothing about its shape, so thanks for extrapolating the data for us, Juliet.

jp-30, Dec 17, 2015

#351
VadersLaMent Chosen One

Registered:

Apr 3, 2002

Well, it is shaped like a penis

Kinda.

VadersLaMent, Dec 17, 2015

#352
Ghost Chosen One

Registered:

Oct 13, 2003

Compressed map of the entire universe

http://news.yahoo.com/this-is-a-map...vbG8DYmYxBHBvcwMyBHZ0aWQDTVBSREMwXzEEc2VjA3Ny

Ghost, Jan 5, 2016

#353

Shira A'dola and SuperWatto like this.
jp-30 Manager Emeritus VIP - Former Mod/RSA

Registered:

Dec 14, 2000

I can see my house from here.

jp-30, Jan 5, 2016

#354

AmySolo likes this.
DantheJedi Jedi Grand Master

Registered:

Aug 23, 2009

What would happen if I went to to the edge of the universe?

...............

Well, this is boring, I'm tired of parallel DantheJedi lording his cowboy hat over me!

DantheJedi, Jan 5, 2016

#355
yankee8255 Force Ghost

Registered:

May 31, 2005

So there may be a 9th planet in our solar system after all

http://m.space.com/31670-planet-nine-solar-system-discovery.html

yankee8255, Jan 21, 2016

#356

Shira A'dola likes this.
jp-30 Manager Emeritus VIP - Former Mod/RSA

Registered:

Dec 14, 2000

The mythical Planet X now has to be called Planet IX. I hate prequels.

jp-30, Jan 21, 2016

#357

AmySolo, VadersLaMent, Ghost and 1 other person like this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

A new kind of telescope

Flat telescopes. The still need to be large in diameter and such though.

VadersLaMent, Jan 24, 2016

#358
VadersLaMent Chosen One

Registered:

Apr 3, 2002

Uranus probed for the first time this day 30 years ago

VadersLaMent, Jan 25, 2016

#359

AmySolo and Shira A'dola like this.
Ghost Chosen One

Registered:

Oct 13, 2003

Huge new solar system discovered... a planet orbiting a star that's over 7000 AU away. (By contrast, Neptune is 30 AU away from the sun).

http://www.nbcnews.com/tech/innovat...r-discovered-dwarfs-our-own-n505246?cid=sm_fb

Ghost, Jan 27, 2016

#360

AmySolo, Shira A'dola and VadersLaMent like this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

It's year is 900,000 years. No birthdays for you!

VadersLaMent, Jan 27, 2016

#361

AmySolo likes this.
Ghost Chosen One

Registered:

Oct 13, 2003

New photo of Ceres, the dwarf planet in the Asteroid Belt...

Ghost, Jan 30, 2016

#362

VadersLaMent likes this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

VadersLaMent, Jan 31, 2016

#363

Ghost likes this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

Gravitational wave astronomy

The announcement of today's announcement was announced this past weekend. I didn't know this has been going on since 2002.

A black hole of 36 solar masses and one of 29 combined to set off a release of energy 50 times the energy of all the stars in the universe for a tiny bit of a second. The two black holes made one black hole of 62 solar masses.

“At optical wavelengths,” Kip Thorne told the news conference, “we can see the universe as a calm place, like looking at the ocean on a quiet day. But on September 14, all that changed. Now we see an ocean of crashing waves, as black holes create a violent storm in the fabric of space and time.” Thorne went on to speak of the kind of detections that will be possible as gravitational wave astronomy advances, including not only the black holes, neutron stars and supernovae previously mentioned, but the possible detection of cosmic strings reaching across the cosmos, created by the process of inflation in the earliest moments of the universe.

VadersLaMent, Feb 11, 2016

#364

AmySolo likes this.
Ghost Chosen One

Registered:

Oct 13, 2003

new survey of Milky Way:
http://www.eso.org/public/news/eso1606/

Ghost, Feb 24, 2016

#365

Sarge, AmySolo and VadersLaMent like this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

VadersLaMent, Mar 14, 2016

#366
Ghost Chosen One

Registered:

Oct 13, 2003

NASA observed a live Supernova, video recreation below

Ghost, Mar 27, 2016

#367

Sarge, AmySolo and Darth_Voider like this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

Something crashed into Jupiter

VadersLaMent, Mar 29, 2016

#368
Ghost Chosen One

Registered:

Oct 13, 2003

Astronomers discover star with a "pure oxygen atmosphere"
http://www.businessinsider.com/astr...-with-an-almost-pure-oxygen-atmosphere-2016-4

Ghost, Apr 2, 2016

#369

Sarge likes this.
Sarge Chosen One

Registered:

Oct 4, 1998

Is that an April Fools' joke? The science seems to be explained reasonably...

Sarge, Apr 2, 2016

#370
Ghost Chosen One

Registered:

Oct 13, 2003

No one to think it's not real, Sarge.

Ghost, Apr 2, 2016

#371
Ghost Chosen One

Registered:

Oct 13, 2003

This is a great article on the limits of humanity... how much of the universe we'd possibly ever be physically able to explore...
even if we did miraculously invent near-lightspeed travel and begin colonization/exploration efforts immediately (extremely unlikely / impossible)

http://www.forbes.com/sites/startsw...humanity-can-go-in-the-universe/#81486f269310

Lord Vivec
VadersLaMent

The Limits Of How Far Humanity Can Go In The Universe

If you peer out into the depths of space — at the vast expanse of stars, galaxies, and even the leftover glow from the Big Bang itself — you might think that if humanity can understand the laws of nature and create a good enough technology, there are no limits to what we can explore. If we were to develop nuclear fusion technology, antimatter storage capabilities, or even the ability to harness dark matter as we traveled, we could unlock the potential for interplanetary, interstellar or even intergalactic travel. By accelerating ourselves over months or even years to reach near-light speeds, we could even reach our target destination within a single human lifetime.

Yet even if we imagine a future where we can do exactly that, there are still parts of the Universe that will be forever inaccessible to us. If the Universe were static, constant and forever unchanging, then all it would take was time to reach even the most distant object we could fathom. But our Universe isn’t any of those things; it’s expanding, cooling, and gravitating from an initially hot, dense state known as the Big Bang.

Gravitation works to slow that expansion down, and for a time, the most distant galaxies did slow down in their motion away from us. As time went on and on, the light from these distant objects caught up to us, and we became able to see more and more of them.

But about 6 billion years ago, the Universe expanded to such a large volume and the density of “stuff” like matter and radiation dropped to such a small value that a new form of energy became important: dark energy, or the energy inherent to empty space itself. When that form of energy took over, it caused the Universe’s expansion to accelerate, and distant galaxies began to move away from one another at a faster and faster rate.

This didn’t undo the powerful influence of gravitation to bring atoms, planets, stars, galaxies or even groups and clusters of galaxies together. Our local group — featuring the Milky Way, Andromeda, Triangulum and about 50 other, smaller galaxies — was bound together long before dark energy became important, and dark energy can do nothing to tear these already bound structures apart. As time goes on, all the galaxies in our local group will merge together, creating a behemoth of a giant elliptical galaxy, known as Milkdromeda. In about 4 billion years, the Milky Way-Andromeda merger will occur, creating the most spectacular night sky Earth will ever know.

But beyond our local group, all the other galaxies, groups and clusters will accelerate away from one another. After enough time goes by, even the nearest galaxies beyond our local group will have sped away from us so far and for so long that they’ll be invisible to us in any wavelength of light, even with the most powerful telescopes we’d ever be able to build. The leftover glow from the Big Bang itself would fade into obscurity, and all we’d be left with were the stars within our own galaxy. Those will burn for trillions and trillions of years, and we’ll have new ones created for quadrillions of years on top of that. To someone born in the far distant future, the Universe’s memory of where it came from — of the Big Bang, of other galaxies, and of the process that brought all of this into existence — will be wiped clean from what’s even observable. Even if we were to leave today for the most distant stars and galaxies we can imagine at nearly the speed of light, only 3% of the ones in the observable Universe could be reached, a number that gets smaller and smaller with each moment that passes.

Click to expand...

"A long time ago
in a galaxy far, far away . . . . "

Ghost, May 12, 2016

#372

VadersLaMent likes this.
VadersLaMent Chosen One

Registered:

Apr 3, 2002

The last paragraph is fascinating. At one point we thought our own galaxy was the entire universe. At some point a new civilization 100 billion years from now may think the same.

VadersLaMent, May 13, 2016

#373
jp-30 Manager Emeritus VIP - Former Mod/RSA

Registered:

Dec 14, 2000

Photo taken by a friend of a friend on Saturday night (4:30am) at my local beach. 30 second exposure.

jp-30, Jun 5, 2016

#374

ChefCurryWindu, Darth_Voider and yankee8255 like this.
Ghost Chosen One

Registered:

Oct 13, 2003

Earth has had a tiny Second Moon for at least a century

http://www.mnn.com/earth-matters/space/stories/earth-has-captured-second-moon-says-nasa

That we're still discovering new things like a second moon orbiting Earth, however tiny, sure makes me think we still have a lot to learn about the universe, no matter how much we think we know now.

Ghost, Jun 17, 2016

#375

(You must log in or sign up to reply here.)

Page 15 of 35