Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

"It's like trying to spot a fish by looking for ripples in a pond, rather than trying to see the fish itself." ...

which is aligned too close to the sun to be seen all month. Related: Night sky, May 2025: What you can see tonight [maps] Read more: Best telescopes for seeing planets in 2025 Want to see planets ...

Learn all about the planets in the solar system and their order ... of rocket fuel and how astronauts get to the International Space Station. How do you stay alive in space? Tim Peake and Fran ...

Q: Why do the planets all orbit the Sun in the same plane? —Randi Eldevik | Stillwater, Oklahoma Because of the way the Sun formed, explains David DeVorkin, a senior curator in the space history ...

But do other planets have seasonal patterns ... For instance, Mercury has no tilt, so "there's almost no seasonal change at all," Byrne said. On the opposite end of the spectrum, Uranus has ...

LUVOIR is after more elusive targets: small, rocky planets ... Hubble Space Telescope launched in 1990 to the James Webb Space Telescope, which is scheduled for launch this year, have all gone ...

To continue Popinchalk's city analogy, by looking beyond the Milky Way we're asking how many people live in all the cities on Earth. "If our galaxy has around 100 billion planets, and there are ...