Oral route. Many drugs can be administered orally as liquids, capsules, tablets, or chewable tablets. Because the oral route is the most convenient and usually the safest and least expensive, it is the one most often used. However, it has limitations because of the way a drug typically moves through the digestive tract.
Measuring Distances to Stars. Astronomers use several techniques for discovering how far away an object is. The first is called trigonometric parallax and is based on geometry, but it is only good for up to about 500 light-years.
Currently, Eris is near its farthest point from the Sun, about 96.7 AU (9 billion miles or 14 billion kilometers) from the Sun. And... Eris is about 3x further away from the sun than Pluto.