No. Your mind is all that you have, even if you use instruments, like a telescope or particle accelerators. The final stop for all of that information is ultimately you. You are alone in your own brain, which technically makes it impossible to prove that anything else exists. It's called the egocentric predicament. Everything you know about the world out there depends on and is created inside your brain. This mattered so much to Charles Sanders Peirce that he drew a line between reality, the way the universe truly is, and what he called the phaneron, the world as filtered through our senses and bodies, the only information we can get. If you want to speak with certainty you live in, that is you react to and remember and experience your phaneron, not reality. The belief that only you exist and everything else, food, the universe, your friends are all figments of your mind is called solipsism. There is no way to convince a solipsist that the outside world is real. And there is no way to convince someone who doubts that the universe wasn't created just three seconds ago along with all of our memories. It's a frightening realization that we don't always know how to deal with. There's even The Matrix defense.