In Depth - NASA Solar System Exploration
Our solar system is moving with an average velocity of 450,000 miles per hour (720,000 kilometers per hour). But even at this speed, it takes about 230 million years for the Sun to make one complete trip around the Milky Way. The Sun rotates on its axis as it …
Cassini Sees Saturn Rings Oscillate Like Mini-Galaxy
2010年10月31日 · 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, garnered from images of Saturn's most massive ring, the B ring, may answer another long-standing question: What causes the bewildering variety of structures seen throughout ...
Cassini Data Help Redraw Shape of Solar System
2009年10月14日 · Data from IBEX and Cassini have made it possible for scientists to construct the first comprehensive sky map of our solar system and its location in the Milky Way galaxy.
A Major Variation on a Theme - NASA Solar System Exploration
2011年7月17日 · Roussos and colleagues have found that the rain of local radiation on the moons is maintained by the combination of cosmic rays streaming in from our Milky Way galaxy and the nuclear physics of the cosmic ray collisions at Saturn.
Dawn Heads Toward Final Orbit - NASA Solar System Exploration
2015年10月26日 · The spacecraft is now on its way to the final orbit of the mission, called the low-altitude mapping orbit. Dawn will spend more than seven weeks descending to this vantage point, which will be less than 235 miles (380 kilometers) from the surface of Ceres.
Our sun belongs to a spiral galaxy, the Milky Way, which is part of a cluster called “the Local Group,” The Milky Way and Andromeda galaxies appear to be the gravitational anchors of the cluster that drag at least twenty other smaller galaxies along with them.
Kicking Up Dust - NASA Solar System Exploration
2011年11月9日 · Given that dust and dusty plasmas are found in regions where new stars form, Hsu et al.’s results from Saturn may provide new insight into the process of star and planet formation in the Milky Way galaxy and elsewhere.
10 Facts about the Pioneer Spacecraft - NASA Solar System …
2022年9月30日 · Like Voyager’s record, the Pioneer plaque was the brainchild of Carl Sagan who wanted any alien civilization who might encounter the craft to know who made it and how to contact them. The plaques give our location in the galaxy and depict a man and woman drawn in relation to the spacecraft.
RPS 3D Viewer – NASA Solar System Exploration
2025年1月9日 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
The answer is, “Then not even light shining straight up would escape.” What we’ve worked out since then are a few things about what kind of object could have such strong gravity. The name we give it is a black hole. Galaxy, showing evidence of black hole in center of galaxy