One car was parked a couple exits up the freeway to keep a lookout. Meanwhile, the rest of the group lugged the body of a dead, 250-pound bear across six lanes of traffic and loaded it into the bed of a pickup.

Back at the house, the crew proceeded to tear into the roadkill, separating the meat, fat, skeleton and hide. The testicles were preserved in a jar of alcohol and placed on the spice rack next to a free-range squirrel head.

Adventures like this have not been uncommon for Tim and Noah Hussin (above), brothers and journalists who have been biking across America for over a year now. After...

AUSTIN — Tipping the scales at two quadrillion times the mass of the sun, the El Gordo galaxy cluster is the largest, hottest, and most energetic cluster ever seen.

Officially called ACT-CL J0102-4915, astronomers nicknamed the cluster “El Gordo” – meaning the fat one – due to its heft. A large portion of its mass is in the form of dark matter, an invisible material that pervades the universe.

Galaxy clusters are the largest known objects in the universe, occurring when hundreds or even thousands of galaxies come together.

El Gordo is located more than 7 billion light years from Earth. At this...