Perseid meteor shower set to dazzle northern hemisphere this week

Astronomers say viewing conditions promising for this year's shower, and 50 to 100 meteors an hour may be visible

The Perseid summer light show is back, and viewing conditions are especially promising across the northern hemisphere.

The meteor shower's is expected to peak on Wednesday night into Thursday morning, and coincides with a total solar eclipse across Spain, Iceland and Greenland and a six-planet parade - though the best time to view the fireballs will come after totality.