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James Webb telescope takes emergency look at 'city-killer' asteroid 2024 YR4 ahead of close encounter in 2032
The James Webb Space Telescope has taken its first look at the near-Earth asteroid 2024 YR4 before a perilous close approach ...
‘City-killer’ asteroid YR4 might not hit Earth in 2032. But can it still be a threat?
YR4, once referred to as a ‘city-killer’ with the potential to cause regional devastation and impact the climate, is no ...
Science News13h
A nebula’s X-ray glow may come from a destroyed giant planet
Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.