When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

It is thus only fitting for a goddess to be named for none other than the door hinge: Cardea. And now, thanks to Clay ...

Timing: Dusk after sunset, but before 9 p.m. local time There are eight planets in our solar system and one dwarf planet (Pluto). Because we live on Earth, the most we could see is a maximum of seven ...

While a solar eclipse involves the moon passing between the sun and the Earth, casting a shadow across our planet, a lunar eclipse involves the Earth passing directly between the moon and the sun.

That’s because Pluto was downgraded from a “planet” to a “dwarf planet” in 2016 by the International Astronomical Union (IAU). However, this year a powerful new telescope is coming ...

collect samples and also take X-ray images of the Earth's magnetic field to "advance research for future human missions on the Moon and provide insights into how space weather impacts the planet ...

A cosmic spectacle is unfolding overhead, with a rare parade of planets turning the night sky ... For more information on this year's full moons and biggest celestial events, check out our 2025 ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the mystery of why no ringed moons exist today. When you purchase through ...

It is in opposition, making it one of the brightest objects near the moon. Opposition means that Mars is directly opposite the sun from Earth’s perspective, making it fully illuminated and ideal for ...

You may be familiar with the notorious Mercury retrograde, but Mercury is not the only planet to go through this stress-inducing phase. In 2025, eight planets will retrograde at various times ...

Dwarf planet Pluto and our Earth are the only two worlds in our solar system with very large moons. These may have come about by a "kiss and capture" process, which preserves a moon's large size.

As 2025 begins, so comes the first full moon of the year. 2025's first full moon will be the last of four consecutive supermoons, according to NASA. But it's a pretty eventful lunar phase.