How Scientists “Look” Inside Asteroids

Asteroids can pose a threat to life on Earth but are also a valuable source of resources to make fuel or water to aid deep space exploration. Devoid of geological and atmospheric processes, these space rocks provide a window onto the evolution of the solar system. But to really understand their secrets, scientists must know …

From Destruction to Creation: Understanding Meteorite Impact Craters

Ever since the planets first formed, they have been bombarded with space rocks. Asteroid and cometary collisions are so forceful that planetary surfaces fracture and melt beneath them, leaving behind huge craters. These impact events have played an important role in our planet’s history, by shaping the geological landscape, producing valuable minerals, and affecting the …

New Horizons Photographs Voyager 1’s Location

On December 25, 2020, NASA’s New Horizons spacecraft pointed its Long Range Reconnaissance Imager in the direction of its predecessor, the Voyager 1 spacecraft, and photographed location from the Kuiper Belt. Voyager 1 is the farthest human-made object and first spacecraft to actually leave the solar system. In fact, according to NASA, Voyager 1 itself …

Measuring Meteorites to Reveal the Origins of the Earth

The planet we call home has a 4.5-billion-year history, but humans have only been around for a tiny fraction of this time. To discover what happened before life arose on Earth, and even before Earth’s formation, scientists can study objects sent from space – from icy comets and rocky asteroids to tiny particles of interstellar …

Space Weather Underground: A Magnetometer Array with Educational Opportunities

The complex processes of Earth’s ionosphere may occur far above the planet’s surface, but when monitored from numerous locations at sufficient distances, they can be measured using inexpensive equipment on the ground. Dr. Charles Smith at the University of New Hampshire has assembled an extensive team to do just that, with participants ranging from space …

How do we know if an asteroid headed Earth is dangerous?

There are a lot of things that pose a threat to our planet – climate change, natural disasters, and solar flares, for example. But one threat in particular often captures the public imagination, finding itself popularized in books and films and regularly generating alarming headlines: asteroids. by Jonathan O’Callaghan

10 Amazing Moon Facts

Earth has got only one moon – a rocky, cratered place, about a quarter the size of Earth and an average of 384,400 kilometers (238,855 miles) away. It is simply called – well, “the Moon” because people didn’t know other moons around other planets existed until Galileo Galilei discovered four moons orbiting Jupiter in 1610. …

Here’s how scientists planning to deflect asteroids that might damage Earth

Asteroids – the bits and pieces leftover from the formation of the inner planets – are a source of great curiosity for those keen to learn about the building blocks of our solar system, and to probe the chemistry of life. Humans are also considering mining asteroids for metals, but one of the crucial reasons …