The best telescope to observe celestial bodies in the sky depends on the specific interests and goals of the observer. Here are some factors to consider: Aperture: A larger aperture (the diameter of the telescope's main lens or mirror) will generally provide a brighter and clearer image of celestial objects. Aperture size can range from 70mm to over 400mm. Magnification: The magnification of a telescope can be adjusted using different eyepieces, but higher magnification will generally result in a smaller and fuzzier image. Mount: A sturdy and stable mount is important for clear viewing, especially when using high magnification. Equatorial mounts are good for tracking the motion of celestial objects, while altazimuth mounts are simpler and more compact. Budget: Telescopes can range in price from a few hundred to several thousand dollars. It's important to find a balance between aperture size and budget. Based on these factors, some of the best telescopes for observing celestial objects include the Celestron NexStar 6SE, the Meade LightBridge Mini 130, and the Sky-Watcher Dobsonian SW 200P. It's important to note that for the best viewing experience, it's important to learn about the night sky, how to set up and use the telescope, and how to make basic observations. Joining a local astronomy club or taking a class can be a great way to get started.