The size of the solar system is defined by the volume of space over which the sun’s influence exceeds those of other nearby stars in the Milky Way galaxy. This influence derives from two ...

The dark shadow overlaid on a starry background is known as the Circinus West molecular cloud. Circinus West is a cold, ... around 60 times the size of our solar system.

Astronomers manning an asteroid warning system caught a glimpse of a large, bright object zipping through the solar system ...

On this scale, Sun is about the size of a large grapefruit, while Earth is the size of the ball point in a pen. It’s 15 big steps from the Sun to Earth, about 75 yards to marble-size Jupiter, and less ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

In the early days of our solar system, when the Sun was still young and the planets were barely formed, Jupiter wasn’t the gas giant we see today. In fact, today’s Jupiter would look like a ...

One of Jupiter’s most recognizable attributes is its sheer size.With a diameter over 88,800 miles, our solar system’s largest planet is 11 times as wide as Earth and twice as massive as all ...

The exoplanet, a planet beyond our solar system, has been dubbed TWA 7b after NASA's James Webb Space Telescope captured ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Credit: NASA / JPL-Caltech / SwRI / MSSS / Tanya Oleksuik Jupiter, the ...

A mind-bending hypothesis is gaining traction among scientists: The universe may be teeming with microscopic black holes the size of an atom, but with the mass of a city-sized asteroid. Created ...

Many smaller outer solar system objects appear to have orbits that are aligned in certain mysterious ways; the simplest explanation is that their motions are influenced by another, as-yet-unseen ...

The Solar System. NASA. The most distant gravitationally bound objects to the Sun are aperiodic comets. Aperiodic, or long-period comets, can take many thousands of years to complete one solar orbit.