Colliding Dwarf Galaxies Reveal a Glimpse of the Early Universe
Scientists may have spotted two pairs of merging dwarf galaxies, each pair with a duo of soon-to-collide black holesComposite views show two dwarf galaxy mergers: Mirabilis (left) and Elstir and Vinteuil (right). X-ray light is in pink, and optical light is in blue. Credit: NASA/CXC/Univ. of Alabama/M. Micic et al. (x-ray); International Gemini Observatory/NOIRLab/NSF/AURA (optical)For
What Can We Do to Make Sure the FAA and Southwest Airlines Fiascos Never Happen Again?
Perhaps unknowingly, airline passengers who lived through the outage of the Federal Aviation Administration’s (FAA’s) Notice to Air Systems (NOTAM) system in January or Southwest Airlines’ meltdown in December were part of history. The NOTAM outage was the first time the FAA paused all domestic departures in the U.S. since 9/11. This ground stop of
Pablo Escobar’s ‘Cocaine Hippos’ Spark Conservation Fight
Researchers worry the Colombian environmental ministry will side with animal-rights activists rather than curb the spread of invasive hippos once kept by drug-cartel leader Pablo EscobarHippos are seen swimming close to the Magdalena River in Doradal, Colombia on March 29, 2022. Credit: Juancho Torres/Anadolu Agency via Getty ImagesColombian environment minister Susana Muhamad has triggered fear among researchers that she will protect
Ukrainians Shift to Renewable Power for Energy Security amid War
CLIMATEWIRE | It’s not easy to talk about climate change and carbon-free power when your country is a battlefield. That’s the hard reality environmental advocates and clean energy companies have confronted in Ukraine in the wake of the Russian invasion. But they say renewable energy has nonetheless gained wider public support as a reliable power source
We Must Prevent a New Nuclear Arms Race
Smart U.S. leadership and international pressure on Russia can prevent an unconstrained global nuclear arms raceRussian President Vladimir Putin at a concert dedicated to Defender of the Fatherland Day at the Luzhniki Stadium on February 23, 2023. Credit: American Photo Archive/Alamy Stock Photo Russian President Vladimir Putin’s calamitous invasion of Ukraine has killed at least
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