Earth as seen from Mars
Earth and moon photographed from Mars (acquired by the HiRISE camera on NASA's Mars Reconnaissance Orbiter).
The first exoplanet (outside the solar system) was identified in 1995. Here is the current count from Nasa's Exoplanet Archive:
1,035 Planets around 774 Stars
179 Systems with Multiple Planets
3,602 Kepler Candidates and Confirmed Planets
Nasa and related entities have tons of data that hasn't been analyzed. They have open archives of Hubble images and exoplanet data from the Kepler mission and other sources. Many new discoveries are made by amateurs.