Perseid meteor shower begins early Friday morning . NASA scientists host live web ##cast during the show . Best weather is in Northern California . The Marshall Space Flight Center astronomer will answer questions beginning around 11 p.m. Eastern Time Thursday . The Perseids have been observed for at least 2,000 years .
Perseid meteor shower begins early Friday morning . NASA scientists host live web ##cast during the show . Best weather is in Northern California . The Perseids have been observed for at least 2,000 years .