Orbits of Potentially Hazardous Asteroids

NASA has published a disturbing image of the orbits of potentially hazardous asteroids on the APOD (Astronomy Picture of the Day) website. The image shows the orbits of the asteroids which are more than 140 meters (450 feet) across and will pass within 7.5 million kilometers (4.66 million miles) of Earth. If hits, a space …

Why don’t we shoot garbage into the Sun?

The Earth is getting full of waste, pollution, and garbage. Yes, the world should focus on recycling and reducing waste, but, the truth is that it’s just not that easy, and in fact, we’re not doing well so far. So, why not shoot the Earth’s garbage into space, or even better, into the Sun?

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