SnitchSeeker.com - View Single Post - Astronomy Lesson 1 :: the Big Bang Theory

Lexers · 01-24-2014, 10:44 AM

Quote:

Originally Posted by sweetpinkpixie

"Alright, in our timeline of the universe's formation we have reached a period of exponential expansion and as it is expanding it is also cooling. During this time, light chemical elements were created. These were created within the first three minutes of the universe's formation. Despite these elements being present, it was too hot for light to shine and it would take about 380,000 years before matter cooled enough for electrons to combine with nuclei to form neutral atoms. We are skipping over several stages of the universe's evolution here, but this phase of neutral atoms forming is called recombination and is a term I would like you to remember. As these electrons were absorbed, the universe to become transparent and light was finally unleashed. This light is still detectable today."

Which was pretty neat, right? That even now we were still able to catch a glimpse of some of the first light in the universe.

"However, after the era of recombination came something I like to call the Cosmic Dark Ages, which is said to have lasted between 150 million to 800 million years after the Big Bang." He paused for a moment and wished he had some water with him. Awful lot to talk about and his throat suffering. "You may use your textbooks for this next question if you wish, but who can tell me in your own words, what the HUDF.YD3 is and why is it significant? Try to keep your response as concise as possible. Stick to the big picture if you can."

WAIT A MINUTE.

Lucas totally had heard of the Hubble Space Telescope before! So uh.. here came some words. "It's actually called the Hubble Ultra Deep Field so, that's why, you know, with the letters in the acronym, but anyway, it's a galaxy that's like really, really far away I think like with a light travel time of like almost 14 billion years but that isn't EVEN the coolest part. When they found it in like 2010, basically they thought it was the second furthest thing away from us but it ISN'T! They found it was located in the constellation of Fornax which is such a cool name. And the reason this place is interesting is because it's like in this phase called.. reonionisation? Huh. That didn't sound right. "But it's like younger than our one and that's cool because we're really interested in what how our universe was built."

But also because, "the Europeans are building a telescope with a really silly name, like it's not creative at all, so they can look further back in space, like older galaxies that are dimmer? Professor, why are they dimmer?"

Still. Astronomy was COOL and Lucas had clearly done some reading.

01-24-2014, 10:44 AM	#173 (permalink)
Lexers Mooncalf Join Date: Apr 2008 Location: GMT +10 Posts: 7,484 Hogwarts RPG Name: Lucas L. Rodemiere Third Year x3	Quote: Originally Posted by sweetpinkpixie "Alright, in our timeline of the universe's formation we have reached a period of exponential expansion and as it is expanding it is also cooling. During this time, light chemical elements were created. These were created within the first three minutes of the universe's formation. Despite these elements being present, it was too hot for light to shine and it would take about 380,000 years before matter cooled enough for electrons to combine with nuclei to form neutral atoms. We are skipping over several stages of the universe's evolution here, but this phase of neutral atoms forming is called recombination and is a term I would like you to remember. As these electrons were absorbed, the universe to become transparent and light was finally unleashed. This light is still detectable today." Which was pretty neat, right? That even now we were still able to catch a glimpse of some of the first light in the universe. "However, after the era of recombination came something I like to call the Cosmic Dark Ages, which is said to have lasted between 150 million to 800 million years after the Big Bang." He paused for a moment and wished he had some water with him. Awful lot to talk about and his throat suffering. "You may use your textbooks for this next question if you wish, but who can tell me in your own words, what the HUDF.YD3 is and why is it significant? Try to keep your response as concise as possible. Stick to the big picture if you can." WAIT A MINUTE. Lucas totally had heard of the Hubble Space Telescope before! So uh.. here came some words. "It's actually called the Hubble Ultra Deep Field so, that's why, you know, with the letters in the acronym, but anyway, it's a galaxy that's like really, really far away I think like with a light travel time of like almost 14 billion years but that isn't EVEN the coolest part. When they found it in like 2010, basically they thought it was the second furthest thing away from us but it ISN'T! They found it was located in the constellation of Fornax which is such a cool name. And the reason this place is interesting is because it's like in this phase called.. reonionisation? Huh. That didn't sound right. "But it's like younger than our one and that's cool because we're really interested in what how our universe was built." But also because, "the Europeans are building a telescope with a really silly name, like it's not creative at all, so they can look further back in space, like older galaxies that are dimmer? Professor, why are they dimmer?" Still. Astronomy was COOL and Lucas had clearly done some reading. __________________ Captain Awesome?_________________________________ _________________________________.....Fidget works too.