Résultats pour "Black" dans Sciences et technologies

Widely regarded as the most brilliant theoretical physicist since Einstein, Stephen Hawking has opened our minds to today's most important scientific ideas about the cosmos. Now he returns to shed new light on the darkest region of space and time...and to reveal an extraordinary array of possibilities for our understanding of the universe.

The 1930s were a tough time. The Great Depression left many people jobless and penniless. Dust storms and drought led to failed crops. Livestock died. People thought things couldn’t get much worse. Then, on April 14, 1935, the sky turned black. For hours, an enormous dust blizzard blanketed the country in darkness.

In April 2019, the Event Horizon Telescope team unveiled the first ever image of a super massive black hole. This inspiring scientific breakthrough took years of hard work, innovative thinking, and a level of global cooperation never seen before. A multinational team of scientists, lead by Dr. Shep Doeleman and Dr. Heino Falkem, used eight of the largest telescopes from around the world to collect more than four million billion bytes of data, which was flown to teams of computer scientists and mathematicians.

If a black hole is not a hole, then what is it? Find out what black holes are, what causes them, and how scientists first discovered them. Learn how astronomers find black holes, get to know our nearest black-hole neighbor, and take a journey that will literally s-t-r-e-t-c-h the mind. Includes...

In the past and present, Black people have developed new products and created new processes in STEM (science, technology, engineering, and mathematics). Their work has addressed problems such as medical and healthcare inequality and the negative impacts of climate change. Celebrate the people who have made great achievements in STEM, including PlayVS founder Delane Parnell, astronaut, doctor, and engineer Mae Jemison, and environmental justice leader Peggy Shephard.

Did you know nothing escapes a black hole? What else do scientists know about these mysterious places in space? Find out more in Black Holes.

Black holes are one of the greatest mysteries of outer space. No visible light can escape the strong gravity of a black hole. This makes black holes invisible - and very difficult to study. But scientists make new discoveries and develop new theories about these mysterious objects every day. In 2015, astronomers were able to finally confirm a theory that Einstein had developed 100 years earlier! And in 2016, scientists found that black holes may form in a different way than they ever thought possible.

Three species of bear inhabit North America: the grizzly, the polar bear, and the black bear. But the American black bear is truly North America's bear, found only in North America. Black bears range from Canada to Mexico, from New England to California.

Black bear claws latch onto bark as they climb up trees. Find out these beautiful bears' life cycle, diet, and habits in their woodland home.

Take a deep look into some of the most mysterious objects in the universe - black holes. Listeners will explore the most up-to-date information available and be encouraged think critically about space discoveries in this STEM-focused title!

Brr! Polar bears live in cold places. Learn other things about these animals inside this book.

In the Black Hills of South Dakota lie eleven thousand acres of breathtaking rangeland and rimrock, canyons and pastures - home to more than three hundred wild mustangs. This preserve was the vision of one man - Dayton Hyde - who conceived of a place where wild horses could live and die in freedom and dignity.

What space objects can have millions of times more mass than our sun, but they remain invisible? Black holes! Their gravity is so strong that not even light can escape. In this audiobook, you'll learn about one of the amazing wonders of space. As part of the Searchlight Books™ collection, this series explores outer space and sheds light on the question: What's amazing about space? Kid-friendly explanations of science concepts will help you discover the answers!