Yes, there may be some people who have not seen or heard of Google Sky. It is not as well-known as other Google products like Google Maps or Google Earth.
Google Sky uses data from various sources such as NASA, the European Space Agency, and the Sloan Digital Sky Survey. While it may not be as comprehensive as other professional astronomical databases, it is generally considered a reliable source for basic information.
No, Google Sky does not provide real-time images of the sky. The images are a combination of past observations and simulations.
Google Sky is available on desktop computers and mobile devices with internet access. However, it may not be available on all older or less common devices.
Yes, you can use the search function on Google Sky to find specific objects such as planets, stars, and galaxies. You can also use the layers feature to view different types of objects in the sky.