LifeDino-killing asteroid choked whole world in dust within a few hours When a large asteroid hit the Earth 66 million years ago, it sent huge curtains of dust flying tens of kilometres up into the air that quickly covered the planet 51¶¯Âþ
SpaceThe atmosphere gets in the way of the universe’s most amazing objects Earth’s atmosphere thankfully provides air for us to breathe, but when trying to study interesting objects in space it causes all sorts of problems, writes Chanda Prescod-Weinstein Comment