
Meet Earth’s new mini-moon
Earth is getting a tiny new mini-moon for a few weeks. It won’t be the first – or the last.
Earth is getting a tiny new mini-moon for a few weeks. It won’t be the first – or the last.
Most Australians are enthusiastic beachgoers, and we all take for granted the waves that wash our shores. But supposing there were seas on other worlds – would they have such waves too?
Comets and meteorites aren’t just space rocks; they’re a window into the history of Earth and have plenty to teach about the planet’s formation.
NASA just shut down a planetary defence mission that tracks asteroids. So, what happens now?
What would happen if time suddenly began running backwards? Of course, it can’t do that, but the question is one that recently crossed the minds of a team of astronomers in the USA.
One of the big surprises that’s come in recent years from our exploration of the solar system is the existence of icy ocean worlds in its outer reaches. Most are moons of the giant planets, although some dwarf planets such as Pluto may also have a similar structure.
How does a former mineworker from Broken Hill end up working for the world’s biggest space agency, NASA?
Despite the lack of a strong, overarching national strategy, engineers, scientists, academics and entrepreneurs across the continent have been busy developing Australia into a spacefaring nation, building our modern space industry from the ground up.
Astronomers at Macquarie University have pioneered a new technique for observing celestial objects during the day, potentially allowing around-the-clock visual monitoring of satellites and greatly improving safety on Earth and in space.
Earth, the Sun and a bike wheel: why your high-school textbook was wrong about the shape of Earth’s orbit.