ESA Sites

Rank	Website	Country Rank	Monthly Unique Visitors	Pages/Visit	Avg. Visit Duration	Bounce Rate
1	esa.int	#12424	5.8M	00:02:29	2.84	55.41%
2	openair.com	#9923	946.7K	00:09:45	11.61	15.76%
3	astronomy.com	#19941	930660	00:01:25	1.7532277146113	73.46%
4	kosmonautix.cz	#1380	201711	00:08:41	5.306679144032	44.31%