A bit of additional information will go a long way in helping us come up with
a plausible speculation.
Such items as
-- How often do you see them
-- What time on what date did you see them last
-- In what direction ?
-- Were they moving ?
-- How long did you watch them ?
-- Are you referring to Washington DC, Washington state, Washington Pennsylvania,
Arkansas, Kentucky, Oklahoma, Texas etc. ?
Stars.
Venus is visible in the night-sky for the same reason we see the moon - Sunlight is reflected off the surface.
There are quite a few astronomy programs out there that you can use to identify a planet in the sky above you. I use WorldWide Telescope from Microsoft. You just set your viewing location and it shows you what you can see from that spot.
Cancer is in the night sky in late winter, but it's EXTREMELY hard to see in cities because it's stars are very, very faint.
full moon
The stars are always there, but you cannot see them every night because the sky will be covered with clouds on some nights. If you were to go above the clouds you could see them.
OrionOrion will be visible in the night sky at different times of the year. As the Earth progresses around the Sun, the stars (including those that make up Orion) will be above the horizon at different times of the day. If one cannot see Orion in the night sky, it's because it's above the horizon during the day, not at night. Wait six months and Orion will be visible in the night sky.
The constellation lupus appears in the southern sky. You can see it at night.
in the night sky
In the sky at night
Stars.
You could not see the stars from the surface of Venus. The sky there is obscured by thick clouds. If you were to fly above the clouds, though, you could see the stars.
Right above Orion
you can see it in the summer sky. so your answer is no you can not see it every night
The Sun.
You cannot see 'too many' stars in the night sky. You can only see those that are visible. Atmospheric conditions vary and with it, its the transparency. The clearer the sky the more stars you can see.
Stars and the moon