Ok so we revolve around the sun. At nighttime in January we face away from the sun to see the nighttime sky and stars.
6 months later in July we’re on the opposite side of the sun and now again at nighttime we face away from the sun.
But this direction is now 180 degrees away from the January direction… but the nighttime sky is still the same
How is that possible
The constellations visible in January should not be visible in July if we’re literally facing 180 degrees away
I understand planets will wander, but we shouldn’t see Orion in January and July but we do
Wherever you are on earth, regardless of season, the only stars you don’t see at night are the ones blocked by that rock you’re standing on.
ISome of the stars rise or fall under the horizon as the planet spins, and which ones of those you see can and do vary based on the season. These are the ones that the earth (and the sun) block due to the orbit of our planet.
There will be stars due north or due south that you’ll see all year. This part of the sky isnt blocked by the earth or the sun at all. In fact, if you use a camera with the right hardware to see through the diffuse sunlight that makes the sky seem blue, you could see the same small disk of the sky at any time during the year, regardless of season or time of day.
Note that the above assumes you’re in one of the temperate bands between the tropics and the polar bands, where sunlight varies throughout the year but every day has a night.
On the poles you only get one night a year, and it’s always the same stars. And on the equator you need a clear horizon to see the polar stares, while the seasonal constellations will be more or less right overhead.
I’m at exactly 45° latitude. I wait all year for winter to come so I can observe Orion as its not visible for me in the dead of summer. It does remain visible for a while into spring and fall however.
The constellations are different at different times of year. Scorpio is the scorpion that killed Orion, so they were thrown into different parts of the sky since they don’t get along, and that’s whey Scorpio appears in the summer and Orion appears in the winter.