In Depth | Sun – NASA Solar System Exploration
The Sun is located in the Milky Way galaxy in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm.
Galleries | Galileo – NASA Solar System Exploration
Jul 11, 2018 · Galileo sparked the birth of modern astronomy with his observations of the Moon, phases of Venus, moons around Jupiter, sunspots, and the news that seemingly countless …
Cassini Sees Saturn Rings Oscillate Like Mini-Galaxy
Oct 31, 2010 · And the answer, published online today in the Astronomical Journal, is this: The rings are behaving like a miniature version of our own Milky Way galaxy. This new insight, …
that the center of a galaxy’s mass was located where the greatest amount of luminous matter (bright matter—the matter we can see) was found. Our sun, carrying the planets with it, orbits …
In Depth | Hypothetical Planet X - NASA Solar System Exploration
Jan 20, 2015 · Overview. Caltech researchers have found mathematical evidence suggesting there may be a "Planet X" deep in the solar system. This hypothetical Neptune-sized planet …
Saturn's Mysterious Hexagon Emerges From Winter Darkness
Dec 8, 2009 · Because Saturn does not have land masses or oceans on its surface to complicate weather the way Earth does, its conditions should give scientists a more elementary model to …
Pioneer 10 Phone Home – NASA Solar System Exploration
Feb 27, 2002 · "We sent up a signal on April 27, 2001, and on April 28, 2001 - 22 hours later, the time it took for the two-way signal to return - there it was, right on time; it came in loud and …
Cassini Spots Daytime Lightning on Saturn - NASA Solar System …
Jul 17, 2012 · In composite images that show the band of the storm wrapping all the way around Saturn, scientists have seen multiple flashes. In one composite image, they recorded five …
Cassini - NASA Solar System Exploration
The radio and plasma science instrument was included on the Cassini mission to provide an up-close look at Saturn’s invisible environment that is impossible to see from Earth. Saturn’s radio …
Images | Top 10s – NASA Solar System Exploration
NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.