Alan Stern
Alan Stern

The Kuiper Belt is the largest mapped structure in our planetary system, three times as big as all the territory from the sun out to Neptune's orbit.

Alan Stern
Alan Stern

If you put Earth out beyond Neptune, you wouldn't be able to call it a planet because it couldn't clear its zone.

Carolyn Porco
Carolyn Porco

Every type of ring behavior we have seen around Jupiter, Uranus, or Neptune can be found in orbit around Saturn. And Saturn's ring system offers the greatest promise of understanding processes in operation within all disk systems, not just those found around planets.

Heidi Hammel
Heidi Hammel

No one planet can tell us everything about the universe, but Neptune seems to hold more than its share of information about the formation of our own solar system - as well as the solar systems beyond.

Heidi Hammel
Heidi Hammel

Neptune's unusual behavior is showing us that though we can make great models of planetary atmospheric circulation, there may be key pieces missing.

Heidi Hammel
Heidi Hammel

When Hubble was launched, it became clear very shortly thereafter that there was a problem with the optics.The mirror was not quite the right shape. And the one program that I had really been looking forward to doing with Hubble was studying outer planets in our solar system, the planets Uranus and Neptune.

Heidi Hammel
Heidi Hammel

What I want to look at with Webb is what we call ice giants in our solar system - the planets Neptune and Uranus.

Heidi Hammel
Heidi Hammel

We really have only been observing Neptune with big telescopes since shortly before 1989.

Heidi Hammel
Heidi Hammel

As you go further from the sun, Jupiter, Saturn and Uranus are each colder in their upper atmosphere. But when you get to Neptune, it's just as warm as Uranus.

Joshua Slocum
Joshua Slocum

To be taken into account were some years of schooling, where I studied with diligence Neptune's laws, and these laws I tried to obey when I sailed overseas; it was worth the while.