def populate_satellites_array():
"""Populates the satellites array from TLEs"""
total_tles = 0
tles = storage.get_tles_from_cache()
metadata = storage.get_metadata()
last_updated.append(metadata.get('last_updated'))
if len(last_updated) > 1:
del last_updated[0]
if not tles:
print('Fetching from spacetrack')
cron_refresh_spacetrack_cache()
tles = storage.get_tles_from_cache()
for tle in tles:
total_tles += 1
s = Satellite(tle)
if s.is_valid():
satellites.append(s)
print('Loaded {} of {} satellites'.format(len(satellites), total_tles))
