Yes it is.
The five planets visible to the unaided eye are Mercury, Venus, Mars, Jupiter, and Saturn. These planets are typically visible at different times of the year and can be easily spotted in the night sky without the need for a telescope.
Yes, you can with the unaided eye.
Yes, Mars is currently (March, 2010) easily visible with the unaided eye. It is high in the East at sunset, and sets between 3 AM and 4 AM, depending on your location.
Mars is visible with the unaided eye. So like Mercury, Venus, Jupiter and Saturn it has been known since humans looked at the sky.
Microscopic
The Andromedia.
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Mercury, Venus, Mars, Jupiter, and Saturn were the five planets known to ancient observers that could be seen with the unaided eye. They were visible to the naked eye due to their brightness and distinctive movements against the background of stars.
The term for visible with the unaided (naked) eye is "gross", as in gross anatomy.
An eleven letter word that means too small to be visible with the unaided is microscopic. This is in contrast with macroscopic.
No. They are large and visible to the unaided eye.
No. They are large and visible to the unaided eye.