NASA's Curiosity Mars rover has been exploring the slopes of Mount Sharp looking for clues about Mars' watery past. Here, it looks at the boxwork pattern for ancient water flow.
The age of exoplanets began in 1992, when astronomers detected a pair of planets orbiting a pulsar. Then, in 1995, astronomers discovered the first exoplanet orbiting a main sequence star. As NASA's Kepler and TESS missions got going, the number of confirmed exoplanets continued to rise.

