This Solar System Catalogue Could Be Key to Finding an Earth-Like Exoplanet

By searching for the telltale, periodic dimming of light from distant stars, astronomers can spot orbiting exoplanets tens to hundreds of light-years away. But how do they know what these bodies look like? Perhaps they first try to imagine how the planets in our own Solar System might appear to a faraway alien world. Read More >>

Half of Our Galaxy Might Have Come From Other Galaxies

Any Carl Sagan fan knows you’re made of star stuff. Protons don’t decay into any other particles (as far as we can tell), so you can reliably assume that most bits of you have been around since a second after the Big Bang. But if you’re thinking a little more locally, you might wonder whether the Milky Way formed in its entirety before little ol’ you were made. Read More >>

Yes, the Eerie Carl Sagan Prediction That’s Going Viral Is Real

Did Carl Sagan really warn about a time in the future when manufacturing jobs would slip away, when the average person would have virtually no control over their political lives, and when we would all cling to superstitions? Yes, Sagan did predict just that. The screenshot you may have seen floating around social media is real. And plenty of people are worried that Carl was talking about our era. Read More >>

Proof That the LightSail Satellite Has Unfurled Properly

Over the weekend, the LightSail satellite unfurled its gigantic solar sail to help propel it through space. Now, the first images to be beamed back from the satellite prove that it’s really up and running. Read More >>

How Planet Hunters are Going to Find the Next Earth

Twenty years ago, discovering another Earth sounded like a science fictional dream. But within a generation, astronomers now believe we might do just that. Read More >>

Carl Sagan’s Solar Sail is Ready for its First Test Flight

“There’s just a tremendously exciting prospect called solar sailing. [It] travels on the radiation and particles that come out of the sun, the wind from the sun. Because it has a constant acceleration, it can get you around the inner part of the solar system a lot faster...than the usual sorts of rocket propulsion.” Read More >>

Why Was Carl Sagan Blackballed From the US National Academy of Sciences?

If you’re ever feeling crappy about not getting recognition for your work, just remember that even Carl Sagan got looked down on by some of his scientific colleagues. In fact, he was never allowed into the US National Academy of Sciences, despite all he did to popularise the scientific worldview. Read More >>

8 of the Most Fascinating Items From Carl Sagan’s Personal Archives

As America's foremost ambassador to space, Carl Sagan has continued to inspire our fascination with exploring beyond Earth. The Library of Congress has digitised its Carl Sagan archives, and several items just collected online give us an amazing new look into the mind of the astronomer. Read More >>