The vast distances between objects in the universe pose a challenge when it comes to traveling between them, especially given the limitation that nothing can move faster than the speed of light in a vacuum according to our current understanding of physics. However, it's important to note that we haven't yet developed technologies or methods to travel significant distances in space, so our current limitations are based on our current understanding and capabilities.
When it comes to the vastness of the universe, it's important to remember that the universe itself is expanding. The expansion of space allows distant objects to move away from each other at speeds greater than the speed of light, but this expansion is a property of space itself and not a result of objects physically moving through space. It's also worth noting that the expansion of the universe doesn't impact objects within local gravitational systems, such as galaxies and galaxy clusters, where gravitational forces can overcome the expansion.
As for our presence on Earth, it's believed that life on our planet originated here and has evolved over billions of years. The processes that led to the formation of the Earth and the development of life are complex and interconnected, involving a combination of factors such as the formation of our solar system, the emergence of suitable conditions for life, and the subsequent evolution of species.
While our current understanding of physics suggests that interstellar travel within a human lifetime is highly challenging, scientists and engineers continue to explore various theoretical possibilities. Concepts such as warp drives, wormholes, or other forms of advanced propulsion are subjects of scientific inquiry and speculation, but we are still far from knowing if they are feasible or if we will ever develop the technology to achieve them.
So, for now, our exploration of the far reaches of the universe is primarily conducted through observations with telescopes and other instruments, gathering data and knowledge about the cosmos from a distance.