✨ Is that a star or a planet?

A very bright “star” in the evening or before dawn is often a planet. Here’s how to tell, with no telescope needed.

Five ways to tell

  1. Does it twinkle? Stars twinkle and flicker, especially low in the sky. Planets shine with a steadier light, because they are close enough to look like tiny discs rather than points.
  2. Is it brighter than everything around it? Venus and Jupiter outshine every star. If one light is far brighter than the rest, and it isn’t the Moon, it is very likely a planet.
  3. What colour is it? Mars looks orange-red, Saturn pale yellow, Jupiter creamy white and Venus brilliant white. Stars have colours too, but a bright orange point is usually Mars.
  4. Where is it? Planets always sit along the same band of sky that the Sun and Moon follow. A bright light near the Moon is often a planet.
  5. Does it move against the stars? Over a week or two, a planet slowly shifts its place among the stars. Stars keep their patterns for a lifetime.

Moving lights: satellites and planes

Which planets are bright right now

For anywhere on Earth. For your own city, with times and directions, pick your city.

Worked out with Astronomy Engine, checked against NASA JPL’s Horizons.