#universe

25 posts · Last used 23d

I asked an #AI model If, in a hypothetical #universe, the speed of #light is not constant & #energy varies with 'c' If we differentiate E=mc² twice with respect to c, what would be the consequences? It said this would destroy the universal causal structure. Stars would collapse, & many other things would happen. No #physicist could explain these outcomes Leaving hostility aside, AI is just a tool. It's up to you whether you use it for good or bad #stem #MultipleDomain #science #physics
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From the vast universe to the smallest particles, everything exists in connected layers. Galaxies form star systems. Stars create the elements that build planets. Planets support life. Cells form tissues, organs and human beings. At the smallest scale, atoms, quarks and other particles shape the matter around us. This visual is a reminder that we are not separate from the universe—we are part of the same structure. The more we explore, the more we understand how much remains undiscovered. #Universe #Science #Astronomy #Biology #QuantumPhysics #SystemsThinking #Learning
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In April, NASA turned off one of the few remaining functional instruments. They have been slowly disabling them since 1998, because of limited power/use at various ranges. Think about that for a moment… It launched almost 50 years ago, in 1977. And we are STILL able to communicate with it. Expectedly until 2036. And this with our technology knowledge at the time. Unless it collides with something or is retrieved, it will reach the Oort Cloud in about 300 years. It will take about 30k years to pass through it. All of this blows my mind. https://science.nasa.gov/mission/voyager #Voyager #Space #NASA #Interstellar #Universe #Technology
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#OnThisDay Birth Anniversary of Georges Lemaître (1894) - first to propose what became known as the "Big Bang theory" of the origin of the #Universe. Malaysia Airlines #Flight17 from Amsterdam to Kuala Lumpur was shot down (2014) while flying over eastern Ukraine. Today is World Day for #InternationalJustice and World #EmojiDay. https://knowledgezone.co.in/news
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Our greatest window into the #universe is nearing completion. This soon-to-be #telescope is located at the top of Cerro #Armazones, the mountain that casts a triangular shadow. At 3046 metres above sea level, and with very dry conditions, the #ELT is in the perfect location for astronomical observations under one of the most pristine skies on Earth. Its dome, planned to be fully completed in 2027, protects the telescope and its sensitive components from the extreme desert environment, and from the Sun during daytime. At night, its two massive sliding doors will open to allow the telescope to observe the night sky, while still protecting it from the wind. #astronomy https://www.eso.org/public/images/potw2617a/
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The White House announced a plan to cancel over 50 #space missions as part of a devastating 46% cut to #NASA #science.

The proposal would likely eliminate thousands of jobs at an agency that has just launched astronauts to the #Moon for the first time in decades, and dozens of other space missions would see their operations reduced or slowly wound down to a halt.

The following missions are to be cancelled:

  1. The Habitable Worlds Observatory being built to search for #life on dozens of Earth-like planets beyond our Solar System while addressing fundamental questions about our #Universe.

  2. OSIRIS-APEX capitalizes on the exceptionally rare 2029 Earth flyby of the potentially hazardous #asteroid #Apophis to advance planetary defense strategies and reveal how Earth’s #gravity alters an asteroid’s surface and interior.

  3. The ExoMars Rosalind Franklin rover will deliberately search for signs of life on #Mars by analyzing the composition of samples collected from as deep as 2 meters below the surface.

  4. The DAVINCI mission is an atmospheric probe that will be deployed to our sister planet, #Venus, and provide the first detailed measurements of the composition and chemistry of its #atmosphere.

  5. Initially focusing on #Jupiter’s interior, atmosphere, and aurora, #Juno is already orbiting Jupiter and has expanded during its extended mission to be a full system explorer capable of investigating the Galilean satellites, rings, inner moons, radiation belts, and boundaries of Jupiter’s magnetosphere.

  6. VERITAS will create unprecedented, global, high-resolution datasets of Venus designed to answer a fundamental question for rocky #planets: how did Earth and her twin Venus evolve into two entirely different examples of planetary #habitability?

https://www.planetary.org/articles/meet-the-people-behind-nasas-endangered-missions

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