Download Nct Universe Ep 1

Around 380,000 years after the big bang, the universe had cooled enough that atomic nuclei could capture electrons, a period astronomers call the epoch of recombination. This had two major effects on the cosmos. First, with most electrons now bound into atoms, there were no longer enough free ones to completely scatter light, and the cosmic fog cleared. The universe became transparent, and for the first time, light could freely travel over great distances. Second, the formation of these first atoms produced its own light. This glow, still detectable today, is called the cosmic microwave background. It is the oldest light we can observe in the universe.

After the cosmic microwave background, the universe again became opaque at shorter wavelengths due to the absorbing effects of all those hydrogen atoms. For the next 200 million years the universe remained dark. There were no stars to shine. The cosmos at this point consisted of a sea of hydrogen atoms, helium, and trace amounts of heavier elements.

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Universe exposes a wide range of environments through a common interface: the agent operates a remote desktop by observing pixels of a screen and producing keyboard and mouse commands. The environment exposes a VNC server and the universe library turns the agent into a VNC client.

Universe includes the Atari 2600 games from the Arcade Learning Environment. These environments now run asynchronously inside the quay.io/openai/universe.gym-core Docker image and allow the agent to connect over the network, which means the agent must handle lag and low frame rates. Running over a local network in the cloud, we usually see 60 frames per second, observation lags of 20ms, and action lags of 10ms; over the public internet this drops to 20 frames per second, 80ms observation lags, and 30ms action lags.

Our initial Universe release includes 1,000 Flash games (100 with reward functions), which we distribute in the quay.io/openai/universe.flashgames Docker image with consent from the rightsholders. This image starts a TigerVNC server and boots a Python control server, which uses Selenium to open a Chrome browser to an in-container page with the desired game, and automatically clicks through any menus needed to start the game.

Welcome to Imagine the Universe! This site is intended for students age 14 and up, and for anyone interested in learning about our universe. If you're looking for grade school level astronomy information, please see the StarChild web site. Enjoy your cosmic journey!

Cosmic Times is a series of curriculum support materials that trace the history of our understanding of the universe during the past 100 years, from Einstein's formulation of gravity to the discovery of dark energy.

The word Universe is usually defined as encompassing everything. However, using an alternate definition, some have speculated that this "Universe" is just one of many disconnected "universes", which are collectively denoted as the multiverse. For example, in Bubble universe theory, there are an infinite variety of "universes", each with different physical constants. Similarly, in the many-worlds hypothesis, new "universes" are spawned with every quantum measurement. These universes are usually thought to be completely disconnected from our own and therefore impossible to detect experimentally.

In my book Why? I focus on the work of the great philosopher of religion Richard Swinburne in responding to the problem of evil. Swinburne argues that there are goods that exist in our universe that would not exist in one with less suffering. If we just lived in some kind of Disneyland-esque world with no danger or risk, then there would be no opportunities to show real courage in the face of adversity, or to feel deep compassion for those who suffer. The absence of such serious moral choices would be a great cost, according to Swinburne.

For these reasons, I think overall the best theory of cosmic purpose is cosmopsychism, the view that the universe is itself a conscious mind with its own goals. In fact, this is a view I first entertained in Aeon back in 2017, before deciding that the multiverse, the topic of the next section, was a better option. Having been finally persuaded that the multiverse is a no-go (more on this imminently), I was prompted to explore a more developed cosmopsychist explanation of fine-tuning in my book Why?, and this now seems to me the most likely source of cosmic purpose.

The Christian philosopher William Lane Craig has argued that, if the universe has no purpose, then life is meaningless. Along similar lines, the atheist philosopher David Benatar proposes that, in the absence of cosmic purpose, life is so meaningless that we are morally required to stop reproducing so that the human race dies out. At the other extreme, it is common for humanists to argue that cosmic purpose would be irrelevant to the meaning of human existence.

According to NASA, after inflation the growth of the universe continued, but at a slower rate. As space expanded, the universe cooled and matter formed. One second after the Big Bang, the universe was filled with neutrons, protons, electrons, anti-electrons, photons and neutrinos.

During the first three minutes of the universe, the light elements were born during a process known as Big Bang nucleosynthesis. Temperatures cooled from 100 nonillion (1032) Kelvin to 1 billion (109) Kelvin, and protons and neutrons collided to make deuterium, an isotope of hydrogen. Most of the deuterium combined to make helium, and trace amounts of lithium were also generated.

For the first 380,000 years or so, the universe was essentially too hot for light to shine, according to France's National Center of Space Research (Centre National d'Etudes Spatiales, or CNES). The heat of creation smashed atoms together with enough force to break them up into a dense plasma, an opaque soup of protons, neutrons and electrons that scattered light like fog.

Roughly 380,000 years after the Big Bang, matter cooled enough for atoms to form during the era of recombination, resulting in a transparent, electrically neutral gas, according to NASA. This set loose the initial flash of light created during the Big Bang, which is detectable today as cosmic microwave background radiation. However, after this point, the universe was plunged into darkness, since no stars or any other bright objects had formed yet.

About 400 million years after the Big Bang, the universe began to emerge from the cosmic dark ages during the epoch of reionization. During this time, which lasted more than a half-billion years, clumps of gas collapsed enough to form the first stars and galaxies, whose energetic ultraviolet light ionized and destroyed most of the neutral hydrogen.

Although the expansion of the universe gradually slowed down as the matter in the universe pulled on itself via gravity, about 5 or 6 billion years after the Big Bang, according to NASA, a mysterious force now called dark energy began speeding up the expansion of the universe again, a phenomenon that continues today.

Since the universe by its definition encompasses all of space and time as we know it, NASA says it is beyond the model of the Big Bang to say what the universe is expanding into or what gave rise to the Big Bang. Although there are models that speculate about these questions, none of them have made realistically testable predictions as of yet.

This estimate came from measuring the composition of matter and energy density in the universe. This allowed researchers to compute how fast the universe expanded in the past. With that knowledge, they could turn the clock back and extrapolate when the Big Bang happened. The time between then and now is the age of the universe.

Scientists think that in the earliest moments of the universe, there was no structure to it to speak of, with matter and energy distributed nearly uniformly throughout. According to NASA, the gravitational pull of small fluctuations in the density of matter back then gave rise to the vast web-like structure of stars and emptiness seen today. Dense regions pulled in more and more matter through gravity, and the more massive they became, the more matter they could pull in through gravity, forming stars, galaxies and larger structures known as clusters, superclusters, filaments and walls, with "great walls" of thousands of galaxies reaching more than a billion light years in length. Less dense regions did not grow, evolving into area of seemingly empty space called voids.

Until a few decades ago, astronomers thought that the universe was composed almost entirely of ordinary atoms, or "baryonic matter," according to NASA. However, recently there has been ever more evidence that suggests most of the ingredients making up the universe come in forms that we cannot see.

It turns out that atoms only make up 4.6 percent of the universe. Of the remainder, 23 percent is made up of dark matter, which is likely composed of one or more species of subatomic particles that interact very weakly with ordinary matter, and 72 percent is made of dark energy, which apparently is driving the accelerating expansion of the universe.

When it comes to the atoms we are familiar with, hydrogen makes up about 75 percent, while helium makes up about 25 percent, with heavier elements making up only a tiny fraction of the universe's atoms, according to NASA.

The shape of the universe and whether or not it is finite or infinite in extent depends on the struggle between the rate of its expansion and the pull of gravity. The strength of the pull in question depends in part on the density of the matter in the universe.

If the density of the universe exceeds a specific critical value, then the universe is "closed" and "positive curved" like the surface of a sphere. This means light beams that are initially parallel will converge slowly, eventually cross and return back to their starting point, if the universe lasts long enough. If so, according to NASA, the universe is not infinite but has no end, just as the area on the surface of a sphere is not infinite but has no beginning or end to speak of. The universe will eventually stop expanding and start collapsing in on itself, the so-called "Big Crunch." 17dc91bb1f