Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

But could dark matter similarly affect motions within our own solar system, and could we somehow observe its effects through its interactions with normal matter? However, according to a paper by ...

On this scale a circle two and a half miles in diameter would include all the members of our solar system; but on this scale the nearest fixed stars would be nearly as distant as is our moon.

New Solar Composition Ratios That Could Reconcile Longstanding Questions Nov. 12, 2024 — A team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids and comets ...

Astronomers say they have figured out the true chemical makeup of our solar system, revealing that it contained much more carbon, oxygen and nitrogen than previously thought. Chiefly, the finding ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...

How our own Solar System came to be? How we could know? Telescopes, microscopes, spectrometers, and gravitational wave detectors all help to piece together the deep history of our Solar System.

"The discrepancy between the observed expansion rate of the universe and the predictions of the standard model suggests that ...

Voyagers 1 and 2 are on a one-way trip, sent forth to study the boundary between our solar system and interstellar space. In 2012, Voyager 1 started sending home readings indicating that it had ...

NASA also takes measurements of the solar wind around the solar system to help better understand the risks it poses to interplanetary travelers. The solar wind’s journey ends at the edge of our solar ...