Learn languages naturally with fresh, real content!

Popular Topics
Explore By Region
Hubble confirms Crab Nebula expansion via pulsar.
Astronomers using the Hubble Space Telescope have tracked the expansion of the Crab Nebula, a supernova remnant first observed in 1054.
New images reveal filaments moving at speeds up to 3.4 million miles per hour, confirming the nebula is driven by a central pulsar.
This data helps scientists understand how stellar explosions evolve over time.
11 Articles
El Hubble confirma la expansión de la Nebulosa del Cangrejo a través de un pulsar.