From February 8 to February 21, Mercury will be visible near the horizon shortly after sunset, and will take on a pink hue, according to Space.com. Mercury isn't actually pink, but will appear so because of the light reflected from the sunset.
Scientists recommend stargazers look out for Mercury about 30 minutes after sunset. For the next few days, Mars will also appear nearby.
Mercury is about the size of Earth's moon, and its orbit around the Sun is a quick 88 days. Because it's so close to the Sun--between 29 and 43 million miles, compared to the Earth's 93 million miles--the Sun's light often makes it difficult to see Mercury with the naked eye.