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APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

Meteors, Comet, and Big Dipper over La Palma

Explanation: Meteor showers are caused by streams of solid particles, dust size and larger, moving as a group through space. In most cases, the orbits of these meteor streams can be identified with dust expelled from a comet. When the Earth passes through a stream, the particles leave brilliant trails through the night sky as they disintegrate in Earth's atmosphere . The meteor paths are all parallel to each other, but, like train tracks , the effect of perspective causes them to appear to originate from a radiant point in the distance. The featured image composite was taken during January's Quadrantid meteor shower from La Palma , one of Spain 's Canary Islands , off the northwest coast of Africa . The Quadrantids radiant is visible just below the handle of the Big Dipper . A careful eye will also discern the faint green coma of Comet Wirtanen . Tonight is the peak of the modest Lyrid meteor shower , with several meteors per hour visible from dark locations with clear skies.

Date April 23, 2019
Credit Image Credit & Copyright: Vincent Duparc
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.