Now, I understand that Jannah and Jahanum are not part of this world but are created as a reward or punishment after the day of judgement. However there are Hadiths which state that Jinns used to travel from this dunya to the heavens to listen to what was happening or being said in the Heavens so they could trick people via magic. So my question is, since the jinns were able to travel to Jannah as they have to power to fly, then is it possibele to send a rocket or satellite to or near Jannah?
Just a disclaimer, jannah(paradise) and (samaa)heavens are two completely different words. The later is the sky/above, especially perceived as a vault in which the sun, moon, stars, galaxy, and planets are situated, also known as outer space.
"Galileo used a telescope to observe the heavens".
The verse in Quran 72:9 ( وَأَنَّا كُنَّا نَقْعُدُ مِنْهَا مَقَاعِدَ لِلسَّمْعِ ۖ فَمَنْ يَسْتَمِعِ الْآنَ يَجِدْ لَهُ شِهَابًا رَصَدًا And we used to sit therein in positions for hearing, but whoever listens now will find a burning flame lying in wait for him.)
They did went close to the heaven. I read once that the jinn was listening to the angles talking just.