Everything Quote by Heidi Hammel

Before 1995, the only planets we knew about were the planets in our solar system.

— Debra Fischer

“The author explains the evidence for they would help from astronomy. He says that if planets are behaving in a way that cannot be…

— N.T. Wright

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

— 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

“This success permits us to hope that after thirty or forty years of observation on the new Planet [Neptune], we may employ it, in…

— Urbain Le Verrier

No matter how you measure it, whether you measure the amount of mass or you measure the number of bodies, most of our solar…

— Carolyn Porco

To say that what a planet is doesn't matter would be to imply that a planetary scientist couldn't explain to someone what the field…

— Alan Stern

I'm driven by the sense that there are still parts of the planet that no one knows anything about.

— Steve Backshall

I'm a huge fan of anything touched by the Neptunes.

— David Gallagher

When I grew up as a kid, we didn't know there were any other planets outside of our own solar system. It was widely…

— John M. Grunsfeld

That is a big question we all have: are we alone in the universe? And exoplanets confirm the suspicion that planets are not rare.

— Neil deGrasse Tyson

One of the things I do know is we know very little about our universe. Even though we think we know a lot, and…

— Kevin A. Ford