Here are some fascinating facts about Tax Day:

• Astronauts File from Space: Astronauts, including Apollo 13's Jack Swigert, have had to request tax extensions while in space.
• Free Food & Deals: Many restaurants, such as Hardee's, Schlotzsky's, and Red Lobster, offer freebies or discounts on Tax Day.
• Surprising History: Federal income tax was introduced in 1861 to fund the Civil War, and the first form was only four pages long.
• Highest Tax Rates: During WWII, the highest marginal tax bracket was 91%.