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.
The Lucy spacecraft will journey for 12 years, observing one main belt asteroid and seven Trojan asteroids that are billions of years old, serving as ancient time capsules from our early solar system. There are several ways you can join in the excitement:
What are some skywatching highlights in October 2021? See several groupings of the Moon, planets, and stars at sunrise and sunset. Then get to know two bright stars that are part of a special group: along with a handful of others, they take turns with Polaris as North Star over thousands of years. Plus, Oct. 16 is International Observe the Moon Night!
NASA’s James Webb Space Telescope is a true technological marvel. Webb will be able to gather light that has been traveling for 13.5 billion years, almost since the beginning of the universe. In effect, Webb is a time machine, allowing us to peer at the first galaxies to form after the Big Bang.
