Some comets orbit the Sun on a regular basis, but others come in from deep space, a region known as the Oort Cloud. What causes them to make this journey, and will we ever be able to explore the Oort Cloud?

Some comets orbit the Sun on a regular basis, but others come in from deep space, a region known as the Oort Cloud. What causes them to make this journey, and will we ever be able to explore the Oort Cloud?
Let’s time-travel to the moment astronomers captured the first direct image of a planet being born — orbiting a young star still in the making. A glimpse into planetary formation in action!
Consider the fact that right now, there’s an SUV-sized rover crawling around the surface of Mars and giving us the best view of its surface
We’ve been so busy wondering how we’ll find aliens that we never stopped to consider what we’ll do if we actually encounter them. How does an alien discovery get communicated to the media?
Venus sucks. Seriously, that place is the worst, with its boiling temperature, intense pressure, sulfuric acid rain. But was it always this bad?
It seems reasonable to ask, should we invest in an interstellar mission now, or wait a few decades or even centuries for better technology to come along which could make the trip much shorter?
Today’s we have story about what spaceflight advances could have happened e.g the lost Apollo Missions & Werhner Von Braun’s “Mars Project”.
People ask why we’re stuck with chemical rockets. Good news, there are other, exotic science fiction-sounding propulsion systems out there.