If you've ever played Kerbal Space Program, you know how difficult it can be to get your spacecraft into the orbit you want. It's even more difficult in real life. This is why it's pretty impressive to see a proposal to study all of Saturn's large inner moons in one go.

At a broad level, orbits are pretty simple. Planets and moons are basically ellipses. Once set into motion, spacecraft generally follow an elliptical or parabolic path, so it's just a matter of lining up your spacecraft's orbit with your destination and point of origin. You can do the calculations by hand if you know the math.

The truth is out there—but we're going to need to look harder.

Scientists at NASA's first ever public meeting on "unidentified anomalous phenomena"—more commonly called UFOs—called Wednesday for a more rigorous scientific approach to clarify the origin of hundreds of mysterious sightings.

The space agency announced last year it was analyzing observations in the sky that can't be identified as aerial or natural phenomena—a subject that has long fascinated the public but was shunned by mainstream science.