Days after it was confirmed that asteroid 2024 YR4 has a 1-in-83 chance of colliding with Earth, American space agency, Nasa ...
Planets are formed when dust and rock in a disk around a young star collide and combine to form ever larger bodies. This so-called accretion is not yet fully understood. Astrophysicists at the ...
In that scenario, the colliding material was regarded as a strengthless ... Pluto would have raised the temperature of the the dwarf planet’s ice shell, which may have caused it to melt and ...