The oldest material on Earth has been found in a meteorite and it is way older than the Solar System!

Scientists have found the oldest material on Earth in a 7 billion-year-old meteorite – a space rock that is way older than the Earth and even older than our solar system! For comparison, the age of Earth is approximately 4.54 billion years, with an error range of about 50 million years. The Sun is about […]

Planetary confusion: why astronomers keep changing what it means to be a planet

Christopher Palma, Pennsylvania State University As an astronomer, the question I hear the most is why isn’t Pluto a planet anymore? More than 10 years ago, astronomers famously voted to change Pluto’s classification. But the question still comes up.

The best view yet of 2I/Borisov, the first confirmed interstellar comet by the Hubble Space Telescope

On October 12, 2019, the NASA/ESA Hubble Space Telescope provided astronomers with their best look yet at the first confirmed interstellar comet – the 2I/Borisov (originally designated C/2019 Q4).

Wandering Earth: rocket scientist explains how we could move our planet

Matteo Ceriotti, University of Glasgow In the Chinese science fiction film The Wandering Earth, recently released on Netflix, humanity attempts to change the Earth’s orbit using enormous thrusters in order to escape the expanding sun – and prevent a collision with Jupiter. The scenario may one day come true. In five billion years, the sun […]