The library system is moving to a new mobile app! The current library mobile app will not be available after January 3, 2018. This only relates to the library’s mobile app (used on phones and tablets). You can still connect to the library through your desktop, laptop, or mobile device’s web browser at https://dalycity.bibliocommons.com/ Projected date for the new mobile app is February 1, 2018. We apologize for the inconvenience
Rosen Pub Group Mercury, the smallest and densest planet in the solar system, was first observed at least five thousand years ago, but its proximity to the sun makes it difficult for scientists to study. This appealing resource illuminates Mercury for young readers with satellite images, helpful diagrams, and vocabulary boxes. Topics covered include Mercury’s formation, surface, atmosphere, orbit, and rotation, as well as Mariner 10 and Messenger, the unmanned spacecraft that have flown by Mercury and provided more insight into the planet’s features.