SPACE is a deadly place – and we’re all living at its mercy on a little blue rock. Thankfully we know that asteroid 2024 YR4 ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

Six planets are visible in the night sky right now. On Feb. 28, Mercury will add a seventh planet to the planetary parade. Venus, Mars and Jupiter are 'great naked-eye targets' for beginning ...

It's not too late to see the planet parade. Stargazers will be able to see four or five planets in the night sky with their naked eye this month. A rare seven-planet alignment will reportedly be ...

In the eyes of the general public, it typically means that we can see multiple planets at once. Interestingly, they'll always appear along the same arc in the night sky. That path is called the ...

Well, truthfully, not much. A planetary alignment occurs "when the planets 'line up' on the same side of the sun, generally speaking," Gerard van Belle, Lowell Observatory's director of science ...

Is it time to abandon it? The Habitable Zone is defined as the region around a star where liquid water can exist on the surface of a planet. At first glance, that seems like a good starting place to ...

But we're yet to prove that, not in small part because of our inability to directly observe the rocky planets residing in their solar system's habitable zones. A habitable zone is a rather small ...

For years, astronomers have searched for habitable exoplanets around main-sequence stars similar to the Sun. These stars provide stable energy for billions of years, making them prime candidates for ...

It’s visible to the naked eye from a dark site. The Andromeda galaxy, then known as the Andromeda nebula, is a bright spot in the sky that intrigued early astronomers. Astronomers as far back as ...

An international team of scientists has confirmed the discovery of a super-Earth—a planet larger than Earth but smaller than gas giants—orbiting within the habitable zone of a sun-like star.