The water-world Enceladus appears here to sit atop Saturn's rings like a drop of dew upon a leaf. Even though it appears like a tiny drop before the might of the giant Saturn, Enceladus reminds us that even small worlds hold mysteries and wonders to be explored.
Inside the clean room at NASA's Goddard Space Flight Center, the golden James Webb Space Telescope is viewed from overhead with its secondary mirror booms stowed. In the next few months, engineers will install other key elements, and take additional measurements to ensure the telescope is ready for space.
The Orion spacecraft crew module for Exploration Mission-1 (EM-1) is lifted into a test stand for pressure testing in the Neil Armstrong Operations & Checkout Building at NASA’s Kennedy Space Center. The work is an important milestone on Orion’s journey toward EM-1, its mission beyond the moon atop the Space Launch System rocket in 2018.
This mid-afternoon, 360-degree panorama was acquired by the Mast Camera (Mastcam) on NASA's Curiosity Mars rover on April 4, 2016, as part of long-term campaign to document the context and details of the geology and landforms along Curiosity's traverse since landing in August 2012.
This illustration shows a star surrounded by a protoplanetary disk. A new study uses data from NASA's Spitzer Space Telescope and four ground-based telescopes to determine the distance from a star to the inner rim of its surrounding protoplanetary disk. Researchers used a method called "photo-reverberation," also known as "light echoes.
The Operational Land Imager (OLI) on NASA's Landsat 8 satellite acquired this large natural-color image showing a wide view of the Caspian Sea around the Tyuleniy Archipelago on April 16, 2016. Ocean scientist Norman Kuring of NASA’s Goddard Space Flight Center found a puzzling feature in the image -- lines crisscrossing the North Caspian Sea.