Can the Hubble Space Telescope take pictures of all the planets in our solar system?
No. Mercury and the Earth are the only two planets that the Hubble Space Telescope has not observed for astronomical purposes. Mercury is too close to the Sun, which is too bright for Hubble to look at. The Earth’s surface, only 380 miles from Hubble, is too close for Hubble to observe. | Back to Top | 14. Can the Hubble Space Telescope take pictures of the Sun? No. The Sun is too bright for the Hubble Space Telescope to observe. Its bright light can damage the telescope’s sensitive detectors. | Back to Top | 15. Why is there a discussion over whether Pluto is or is not a planet? Pluto was called a planet from its discovery in 1930 until it was re-classified as a “dwarf planet” in 2006. The change in status stems from the fact that, since 1993, astronomers have discovered thousands of objects similar to Pluto in size and composition, in the region of Pluto’s orbit. This region is called the Kuiper Belt and the objects are called Kuiper Belt objects (KBOs). Pluto fits with the objects i