This composite image from the Hubble Space Telescope shows the location of Neptune’s newest known moon, S/2004 N 1, which was discovered by Mark Showalter of the SETI Institute. The black and white portion and the color inset were both taken in 2009. Image Credit: NASA, ESA, and M. Showalter (SETI Institute).
NASA’s Hubble [...]
This artist’s concept illustrates how charged water particles flow into the Saturnian atmosphere from the planet’s rings, causing a reduction in atmospheric brightness. The observations were made with the W.M. Keck Observatory on Mauna Kea, Hawaii, with NASA funding. The analysis was led by the University of Leicester, England. Image Credit: NASA/JPL-Caltech/Space Science Institute/University [...]
The trajectories of the twin Voyagers and Pioneers shown together with the more direct route to the edge of the solar system, which would be followed by a purpose-built interstellar probe. Image Credit: NASA
Will we ever be able to send spacecraft to the stars in a reasonable amount of time? The big problem—and [...]