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.
The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.
On Saturday (March 29), SpaceX posted photos on X of the Fram2 mission's Falcon 9 rocket and Crew Dragon capsule rolling out ...
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