I saw two bright lights near Jupiter and I’m pretty sure that it wasn’t just an airplane. It had almost the same level of brightness as Jupiter, and I was wondering what it could be. Can anyone explain me what it was?
It's not likely anyone can provide a definitive answer (certainly not without more specific details), but I can provide some possibilities.
I have been fooled by the sun reflecting off high altitude planes before. They appear motionless if traveling straight towards you, but were obviously planes when observed throught a scope. Landing lights on a plane or hellicopter are another posibility.
Another possibility is a high altitude balloon. A bit rarer than planes, the ones I have seen tend to "flare" a few minutes near sunset, but each balloon and location will be different.
The last likely possibility is a "geosynchronous flasher". These are reflections of the Sun off of satellites in geosynchronous orbit. Due to their distance from Earth, they can occurr well into the night.