Comets Quote by Robin Williams

We are here because over billions of years, countless variables fell into place, any of which could have taken another path. We are essentially…

— Wendy Mass

We really have the most beautiful planet in our solar system. None other can sustain life like we know it. None other has blue…

— Sunita Williams

This is a living planet. Look around. Mars, Venus, Jupiter. Look beyond our solar system. Where else is there a place that works, that…

— Sylvia Earle

The secret of our success on planet Earth is space. Lots of it. Our solar system is a tiny island of activity in an…

— Paul Davies

Human technology has made it to Mars. We are transmitting gorgeous pictures from it. Yet we have not explored our own planet. Two-thirds of…

— Barbara Block

We're fortunate enough to live on a planet that's bathed in thousands of times more energy than we use and that's stocked with thousands…

— Ramez Naam

We live in a world filled with automobiles, highways of the mind, urban disasters, billions of people living on a tiny planet, sharing the…

— Frederick Lenz

Our solar system is actually a wild frontier, teeming with different, diverse places: planets and moons, millions of objects of ice and rock.

— Carrie Nugent

Why are we on this earth?

— Daniel

We have the capability - physically, technically - to protect the Earth from asteroid impacts. We are now able to very slightly and subtly…

— Rusty Schweickart

Our planet doesn't seem to be the result of anything very special

— Murray Gell-Mann

To survive, humans need food, water, and air. Yet biodiversity, the Earth's bodies of water, and the planet's atmosphere are all under threat.

— Graciela Chichilnisky