Blast at Tennessee explosives plant leaves multiple dead, others missing
Multiple people are dead and several others are unaccounted for after a blast on Friday morning in Tennessee at a military explosives company, accordi...
Scientists understand a lot about the universe, from its age to the formation of galaxies. But two of the biggest mysteries—dark matter and dark energy—remain unsolved. These unknown forces shape the cosmos, yet their true nature is still a puzzle. (By: Paul M. Sutter)
An invisible substance making up most of the universe’s mass. Discovered in the 1970s, it doesn’t emit light but holds galaxies together.
A force causing the universe to expand at an accelerating rate. It accounts for nearly 70% of the cosmos.
Cosmology is the study of the universe—our entire cosmic home as a single physical object. Cosmologists seek to understand its origins, history, evolution, contents, and ultimate fate.
Modern cosmology began about a century ago when astronomer Edwin Hubble made two groundbreaking discoveries: that galaxies exist far beyond our own and that they are moving away from us. In other words, the universe is vast—and expanding.
At the heart of modern cosmology is the Big Bang theory, which states that our universe was once smaller, hotter, and denser than it is today. We have overwhelming evidence supporting this, but there are still mysteries we struggle to unravel.
One of the biggest unknowns is dark matter, detected in the 1970s. Scientists believe it’s made of an unknown type of particle, but its exact properties remain elusive. While dark matter doesn’t interact with light or normal matter, it makes up most of the mass in the universe.
The other major mystery is dark energy. In the late 1990s, astronomers discovered that the universe isn’t just expanding—it’s accelerating. We don’t know why, so we labeled this force dark energy.
Dark energy is the dominant factor, making up nearly 70% of the universe's total mass-energy, while dark matter and normal matter together account for about 33.8%.
We understand the big picture—the universe is 13.77 billion years old, and hydrogen atoms formed within minutes of the Big Bang. But the fundamental nature of dark matter and dark energy remains a mystery.
Scientists continue to measure these forces, hoping to uncover new insights. The latest results from the PANTHEON+ survey—which mapped around 1,500 supernovae—confirmed our estimates of dark matter and dark energy but didn’t reveal new surprises.
For now, the search continues.
Video from the USGS (United States Geological Survey) showed on Friday (19 September) the Kilauea volcano in Hawaii erupting and spewing lava.
At least eight people have died and more than 90 others were injured following a catastrophic gas tanker explosion on a major highway in Mexico City’s Iztapalapa district on Wednesday, authorities confirmed.
At least 69 people have died and almost 150 injured following a powerful 6.9-magnitude earthquake off the coast of Cebu City in the central Visayas region of the Philippines, officials said, making it one of the country’s deadliest disasters this year.
Authorities in California have identified the dismembered body discovered in a Tesla registered to singer D4vd as 15-year-old Celeste Rivas Hernandez, who had been missing from Lake Elsinore since April 2024.
A powerful 7.4-magnitude earthquake struck off Russia’s Kamchatka Peninsula on 13 September with no tsunami threat, coming just weeks after the region endured a devastating 8.8-magnitude quake — the strongest since 1952.
From Sunday, all non-EU citizens, including British visitors, will face new biometric checks when entering and exiting the European Union under its long-delayed Entry/Exit System (EES).
The Royal Swedish Academy of Sciences announced that the 2025 Nobel Prize in Chemistry has been awarded to Susumu Kitagawa of Kyoto University, Richard Robson of the University of Melbourne, and Omar Yaghi of the University of California.
The 2025 Nobel Prize in Physics has been awarded to John Clarke, Michel H. Devoret, and John M. Martinis for their groundbreaking discovery of macroscopic quantum mechanical tunnelling and energy quantisation in electric circuits.
United States chipmaker AMD will supply artificial intelligence chips to OpenAI in a multi-year agreement that could generate tens of billions of dollars in annual revenue and give the ChatGPT maker the option to acquire up to 10% of the company.
The Nobel Prize in Physiology or Medicine 2025 has been awarded jointly to Mary E. Brunkow, Fred Ramsdell, and Shimon Sakaguchi for their ground breaking discoveries on peripheral immune tolerance.
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