Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
Watch NASA's Perseverance Rover Land | Video from Mars!
New video from NASA’s Mars 2020 Perseverance rover chronicles major milestones during the final minutes of its entry, descent and landing (EDL) on the Red Planet on Feb. 18 as the spacecraft plummeted, parachuted, and rocketed toward the surface of Mars.
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