While theories of holographic universes have been around since the 1990s, the latest study, published in the journal Physical Review Letters, contains the first proof, the researchers say.
To find the ‘evidence’, the researchers developed models of the holographic Universe that can be tested by peering back in time as far as 13 billion years, at the furthest reaches of the observable Universe. These models depend on the theory of quantum gravity, a theory that challenges the accepted version of classical gravity. The holographic principle says gravity comes from thin, vibrating strings which are all holograms of a flat, 2D Universe.
Recent advances in telescopes and sensing equipment have allowed scientists to detect a vast amount of data hidden in the ‘white noise’ or microwaves left over from the moment the Universe was created. Using this information, the team was able to make comparisons between networks of features in the data and quantum field theory. They found some of the simplest quantum field theories could explain nearly all cosmological observations of the early Universe.
The Kardashev Scale has become a standardized way of classifying (hypothetical) advanced civilizations. The lowest rank, Type 1, is still way ahead of us — but by how much? When will we achieve Type 1 status and exactly how could we plausibly do so? In this video, we go through some estimates of when humanity might become Type 1, and in particular what kind of energy sources we could harness to achieve this feat.
► Kardashev (1964), “Transmission of Information by Extraterrestrial Civilizations”, Soviet Astronomy, 8217: http://adsabs.harvard.edu/abs/1964SvA… ► Michio Kaku video clip from BigThink: https://youtu.be/7NPC47qMJVg. ► Wind map movie credit to Rufinoman and earth.nullschool.net: https://youtu.be/cj2JHsQUoRs. ► Wind energy calculation based off Smil (2004), “Inherent limits of renewable energies“ ► References for the 3.7TW figure for tidal energy dissipation are: Cartwright 1993 (Theory of ocean tides with application to altimetry, in Satellite Altimetry in Geodesy and Oceanography, edites by R. Rummel and F. Sanso, pp. 99–141, Springer-Verlag, New York), Ray 1994 (Tidal energy dissipation: Observations from astronomy, geodesy, and oceanography, in, The Oceans, edited by S. Majumdaret al., pp. 171–185, Pa. Acad. of Sci., Easton, Pa.), Kagan & Sundermann 1996 (Kagan Dissipation of tidal energy paleotides, and evolution of the Earth-Moon system, Adv. Geophys., 38, pp. 179–266) ► Solar video comes from NASA SDO and GSFC: https://svs.gsfc.nasa.gov/12706 ► Learn more about the Carno cycle here: https://en.wikipedia.org/wiki/Carnot_cycle. ► Learn more about the planetary equilibrium calculation here: https://en.wikipedia.org/wiki/Planetary_equilibrium_temperature. ► Tidal power map comes from Gunn & Stock-Williams (2012): https://www.sciencedirect.com/science/article/pii/S0960148112001310 ► Outro music by Thomas Bergersen “Final Frontier”: http://www.thomasbergersen.com. ► Columbia University Department of Astronomy: http://www.astro.columbia.edu. ► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu.
Dust devils have played crucial roles in Mars rover missions.
Scientists analyzed the sound recordings of a Martian dust devil traveling across Mars’ ancient lakebed, the Jezero crater, for the first time. The researchers carried out an analysis of multi-sensor data that suggested the dust devil was more than 118 meters (387 feet) tall. As per a press statement, the findings may improve our understanding of surface changes, dust storms, and climate variability on Mars, which may have implications for space exploration.
NASA/JPL-Caltech/MSSS
The researchers carried out an analysis of multi-sensor data that suggested the dust devil was more than 118 meters (387 feet) tall. As per a press statement, the findings may improve our understanding of surface changes, dust storms, and climate variability on Mars, which may have implications for space exploration.
While grand spaceflight plans of some nations have ended up many years behind schedule, China completed the assembly in orbit of its Tiangong space station in late October, only 22 months later than planned. And on Nov. 29, the Shenzhou 15 mission blasted off from China’s Jiuquan Satellite Launch Center deep in the Gobi Desert and took three astronauts to the space station to begin permanent occupancy of the outpost.
These human spaceflight achievements, combined with recent space probes to the moon and Mars, add to the evidence that China is running a steady space marathon rather than competing in a head-to-head space race with the United States. That China’s space program is making good time toward its long-term goals was reinforced during a rare visit for foreign media to the country’s heavily guarded desert rocket base for the Nov. 29 launch — including lengthy interviews with senior Chinese space officials by in for The New York Times.
Go to https://buyraycon.com/isaacarthur for 15% off your order! Brought to you by Raycon. They say you should always attack from the high ground, and there’s no higher ground than from orbit. Today we’ll examine orbital strikes, asteroid bombardment, kinetic weapons, dropships, and how to defend from them.
The James Webb Space Telescope launched a year ago in December, kicking off a new era for astronomy. Here are the telescope’s most remarkable images from 2022.
Japan’s Hayabusa2 mission returned the sample to Earth in December 2020.
Japan’s asteroid mission Hayabusa2 returned a piece of the asteroid Ryugu to Earth almost two years ago now, and that sample is still revealing valuable insights into the history of the early solar system.
A study by a group of scientists from the Institut de Physique du Globe de Paris, Université Paris Cité and CNRS1 has just revealed the isotopic composition of zinc and copper of asteroid Ryugu, a press statement reveals.
The new findings shed new light on the chemical composition of the asteroid Ryugu, which was targeted precisely because it can reveal a great deal about the early Solar System.
Wikimedia Commons.
A study by a group of scientists from the Institut de Physique du Globe de Paris, Université Paris Cité and CNRS1 has just revealed the isotopic composition of zinc and copper of asteroid Ryugu, a press statement reveals.
Astronomers report the most distant known galaxies — detected and confirmed by the James Webb Space Telescope.
The James Webb Space Telescope (JWST or Webb) is an orbiting infrared observatory that will complement and extend the discoveries of the Hubble Space Telescope. It covers longer wavelengths of light, with greatly improved sensitivity, allowing it to see inside dust clouds where stars and planetary systems are forming today as well as looking further back in time to observe the first galaxies that formed in the early universe.
Established in 1958, the National Aeronautics and Space Administration (NASA) is an independent agency of the United States Federal Government that succeeded the National Advisory Committee for Aeronautics (NACA). It is responsible for the civilian space program, as well as aeronautics and aerospace research. Its vision is “To discover and expand knowledge for the benefit of humanity.” Its core values are “safety, integrity, teamwork, excellence, and inclusion.”
The oral and skin care brand has already undertaken two other experiments on the space station.
Colgate-Palmolive Company and NASA have entered into a partnership to explore innovative solutions to advance oral health, personal care and skin health for astronauts and even populations on earth, according to a press release by the self-care company published on Wednesday.
The deal will see former astronaut Dr. Cady Coleman join the team as an advisor for the experiments conducted.
Called the Space Act Agreement (SAA), the new project will see Colgate and NASA collaborate to test Colgate technologies, across oral health, skin health, and personal care product categories, that could help maintain or even improve the health and wellbeing of all space travelers in low orbit, either before, during, or after long-duration missions. The agreement will also see the International Space Station (ISS) used as an experimental testing ground.
