When faraway stars explode, they send out flashes of energy called gamma-ray bursts that are bright enough that telescopes back on Earth can detect them. Studying these pulses, which can also come from mergers of some exotic astronomical objects such as black holes and neutron stars, can help astronomers like me understand the history of the universe.Space telescopes detect on average one gamma-ray burst per day, adding to thousands of bursts detected throughout the years, and a community of vol ...read more
The Colorado River slowly cut one of the world’s most epic scars into the landscape of northern Arizona. That scar, of course, is better known as the Grand Canyon. One of the top tourist attractions in the U.S., this natural wonder draws visitors from all over the world every year to gawk at the views created by roughly 278 miles of river.Modern visitors are hardly the first to appreciate the vistas. In fact, archaeologists have discovered the remains of a number of ancient cultures in and aro ...read more
Here’s a game: Ask a friend to give you any number, and you’ll return one that’s bigger. Just add “1” to whatever number they come up with, and you’re sure to win.The reason is that numbers go on forever. There is no highest number. But why? As a professor of mathematics, I can help you find an answer.First, you need to understand what numbers are and where they come from. You learned about numbers because they enabled you to count. Early humans had similar needs– whether to count ...read more
Orcas, commonly known as killer whales, are among the ocean's most captivating inhabitants. Reknowned for their striking beauty and complex social structures orcas have long fascinated scientists and the public alike. However, despite their popularity, many misconceptions and questions persist about these marine mammals. From their diet, habitat, behavior, and conservation status, let's take a deep dive into the orca's world and discover just how intelligent they are.Orcas' Surprising Family Con ...read more
When C. Michael Gibson of Boston saw his doctor in the spring of 2023, the blood test results were confusing. His cholesterol levels were decent — he was already taking statins to keep the “bad” cholesterol low — but the arteries delivering blood to his heart were nonetheless crammed with dangerous plaque. “It didn’t make sense,” says Gibson, himself a cardiologist at Beth Israel Deaconess Medical Center. So Gibson asked his physician to check his blood for a specific kind of chole ...read more
Author Vishay SinghPosted on Categories Discover Magazine