Explorer

Kessler syndrome. It will be the upcoming disaster. #space #solarsystem #KesslerSyndrome

🟢 Flight Launch Readiness Review concludes: we are ready!

🛰️Copernicus EU Sentinel-1D and its rocket set for launch.
☁️ Weather conditions favourable
🚀 Liftoff at 21:02 GMT/22:02 CET

📺 How to watch live 👇
https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-1/Watch_live_Sentinel-1D_launch_on_Ariane_6

EUSPA - EU Agency for the Space Programme Thales Alenia Space European Commission CNES CSG Centre spatial guyanais

⭐ The Methuselah Star Seems Older Than the Universe – and We Can’t Fully Explain Why

Just 190 light-years from Earth, HD 140283 — known as the Methuselah star — has puzzled astronomers for decades. Its properties suggest it formed 14.5 billion years ago, yet the universe itself is only 13.8 billion years old.

If true, that would mean this ancient star existed before the Big Bang — which, of course, is impossible. Metal-poor and racing through space at over 800,000 miles per hour (1.29 million km/h), the Methuselah star is a relic from the earliest days of the Milky Way, likely born shortly after the first heavy elements appeared.

Using precise distance data from the Hubble Space Telescope, astronomers calculated its brightness and modeled its age based on its temperature, composition, and nuclear fusion rate — leading to an age estimate that defies the cosmic timeline.

But here’s the nuance: more recent analyses suggest the mystery might not be quite so paradoxical. The age estimate carries a ±800 million-year margin of error, meaning the star’s true age could fall safely within the universe’s 13.8-billion-year lifetime. The apparent contradiction likely comes from uncertainties in stellar modeling or observational limits, rather than any flaw in our understanding of cosmology. Still, HD 140283 sits at the very edge of what seems possible — a humbling reminder that even with modern telescopes and decades of data, the universe still keeps some of its oldest secrets close.

Learn more:
◾ Gundy, Cheryl S. "Oldest Known Star Gets a Birthdate Update." Penn State Eberly College of Science, 6 Mar. 2013.
◾ Siegel, Ethan. "Is the 'Methuselah Star' Really Older Than the Universe?" Big Think, 30 May 2024.
📸 Credit: NASA, ESA, and A. Feild and F. Summers (STScI)

The total extent of the solar system is beyond pluto 😱 Can you believe it??? #solarsystem #sapce #earth #universe

When Oxygen Nearly Killed All Life - Over 2.4 billion years ago, a single event changed our planet forever. How did oxygen turn Earth into a frozen world? And why did it nearly wipe out all life? This video unravels the mystery behind the Great Oxidation Event, using insights from geochemists and evolutionary biologists. A deadly transformation that shaped the world we know today.

Quipu: A 1.4 Billion Light Year Giant - What could be so vast that it stretches 1.4 billion light years across space? How can something that massive remain hidden behind our own galaxy? According to studies using X-ray telescopes, scientists uncovered a cosmic giant that reshapes what we know about the universe. Could this be the key to understanding how dark matter shaped everything we see? And are there even larger structures waiting to be found?

https://techrider.ro/science/robotica/australia-dezvolta-robotul-charlotte-care-poate-construi-o-casa-3d-intr-o-singura-zi-si-care-ar-putea-ridica-baze-pe-luna/

Australia dezvoltă robotul Charlotte, care poate construi o casă 3D într-o singură zi și care ar putea ridica baze pe Lună - TechRider.ro Australia dezvoltă robotul Charlotte, care poate construi o casă 3D într-o singură zi și care ar putea ridica baze pe Lună

Earth's Perfect Balance- The Fragile Harmony #universe #space #galaxy #spaceexploration #earth

This NASA-powered hypercar spits hydrogen out of its exhaust! 🤯