22. What is Meteor Shower?
a sudden burst of meteor activity
that usually lasts several hours.
‘as we look up at the atmosphere, their
parallel paths seem to come toward us
from a place in the sky called the
radiant.’
23. Radiant of a Meteor Shower. The tracks of the
meteors diverge from a point in the distance, just
as long, parallel railroad tracks appear to do.
24. Any fragment of interplanetary
debris that survives its fiery
plunge through Earth’s
atmosphere.
25. First, sometimes bright meteors
(fireballs) are observed to
penetrate the atmosphere to low
altitudes. meteorite falls
People sometimes discover unusual-
looking rocks that turn out to be
meteoritic; meteorite finds
28. The Hubble Space Telescope, as well as
powerful new ground-based telescopes,
enable astronomers to study directly the
nearest of these circumstellar disks in
regions of space where stars are being
born today, such as the Orion Nebula or
the Taurus star-forming region.