Comet Nishimura photobombs NASA spacecraft after its close encounter with the sun (photos)

Kepler predicted that Venus' diameter is almost a quarter of the Sun's diameter, so Mercury should have a tenth of the Sun's diameter. Pierre Gassendi saw the true size of Mercury in 1631 during its transit across the Sun, and was surprised by how small it was as it looked like a sunspot

Venus on Earth: NASA’s VERITAS Science Team Studies Volcanic Iceland

NASA’s OSIRIS-REx Makes Final Course Adjustment Before Asteroid Sample Delivery