SpaceCould a huge lunar telescope be our best chance of spotting aliens? In this latest instalment of Future Chronicles, an imagined history of future inventions, Rowan Hooper explores the advances that meant an optical telescope with an effective mirror size of 3000 km could be built on the moon Comment
SpaceThe cosmos is vast, so how do we measure it? The awe-inspiring distances of the cosmos are hard to visualise, so how can we be certain we are measuring them correctly? Chanda Prescod-Weinstein explains Comment