In February 2025, all seven of our planetary neighbors will be visible from Earth. So what does such a planetary alignment ...

It actually follows its own tiny elliptical orbit around what is called the center of gravity (the barycenter) of the system, the sun and the orbiting planets. This barycenter is usually not equal ...

The gas giant WASP-121b, also known as Tylos, has an atmospheric structure unlike any we have ever seen, and the fastest ...

How does a compass work in space? From the moon to Venus, here’s how a compass would work beyond Earth’s magnetic field.

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to ...

Planetes means “wanderers” in ancient Greek, referring to the fact that as the planets and Earth orbit the sun, those dots of light in the sky appear to move relative to the background stars.

Each planet's orbit results from the balance between its velocity and the sun's gravitational force ... on temperature and acts in the antisolar direction. Related to the appearance of comets ...

What makes the planets appear to line up? The planets orbit the sun continuously. Because they're traveling along the same path (ecliptic), at times, they appear to line up from an Earthling's per ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the sky each night after sunset, according to NASA. While Mercury will briefly ...