Space exploration

erect European annual often grown as a salad crop to be harvested when young and tender

a dry dehiscent seed vessel or the spore-containing structure of e.g. mosses

a self-contained component (unit or item) that is used in combination with other components

To throw, as a lance or dart; to hurl; to let fly.

The act of sending, or the state of being sent; a being sent or delegated by authority, with certain powers for transacting business; comission.

a person who follows or serves another

a particular environment or walk of life; "his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit"

One who lands, or makes a landing.

One who practices robbery on the seas; a pirate.

An optical instrument used in viewing distant objects, as the heavenly bodies.

(physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface;…

a region that is devoid of matter