Already 14 billion miles from the Sun, Voyager 1 is speeding away at 38,000 mph.
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Even at its faintest, Venus always outshines every other star and planet that’s visible from Earth, and then some!
In 2006, Pluto was demoted in a very controversial decision. Unless you ignore nearly all of planetary science, it’ll never be one again.
A unique exoplanet without clouds or haze was found by astrophysicists from Harvard and Smithsonian.
The largest moon around our last planet didn’t originate with Neptune. When it comes to the moons of our Solar System, there’s only one planet that doesn’t fit in with our […]
The most unique interloper into our Solar System has a natural explanation that fits perfectly — no aliens required.
Gravitation, all on its own, can reveal what’s present in the cosmos like nothing else.
Phobos and Deimos only have two explanations, and neither one adds up.
The recently discovered Oort cloud comet, Bernardinelli–Bernstein, has the largest known nucleus: 119 km. Here’s what it could do to Earth.
On the morning of March 31, 2020, these three worlds will be at their mutual closest in 20 years. For the past few weeks, Mars, Saturn, and Jupiter have all shone […]
And the one step we can take to show extraterrestrials we’re figuring it out. Every year, Earth’s meteor showers accomplish two important tasks. This composite photograph shows a large number of […]
In 1990, we only knew of the planets in our own Solar System. Today, the exoplanet count is more than 5000. Here’s what we’ve learned.
NASA is scrapping its Apollo-era launcher platform to make room for new infrastructure that will support upcoming Artemis missions.
Theoretically, we know what happened on the red planet. Here’s how we’ll find out whether we’re right. When it comes to the worlds beyond Earth in our Solar System, it’s only […]
The largest moon in our Solar System, often overlooked, is a water-rich world. Does that mean life? Here on Earth, life took hold very early on in our planet’s history, and […]
On other planets, blue skies and red sunsets aren’t the norm.
The sacrifices of early astronauts paved the way for Apollo’s successes, and so much more. In all of history, only 24 humans have ever escaped Earth’s gravity. The very first launch […]
The odds are slim, but the consequences would be devastating. Here’s what would happen, plus how to avoid it.
Planets are either rocky, like Earth, or gas-rich, like Neptune, with no in-between. What are the different types of planets that exist in the Universe? If all you could see […]
The surface and atmosphere is colored by ferric oxides. Beneath a very thin layer, mere millimeters deep in places, it’s not red anymore.
Science can teach us so much about our planet, but something more must compel us to take care of it. If you want to understand our planet, the best way to […]
The organisms were anchored to a boulder 900 meters beneath the ice, living a cold, dark existence miles away from the open ocean.
At its biggest for the next 15 years, it’s still much smaller than the Moon. On October 6, 2020, Mars makes its closest approach to Earth until 2035. Earth orbits in […]
Despite Betelgeuse’s recent faintening and brightening, I’d bet on these stars instead. Betelgeuse, a nearby red supergiant, will someday explode. The black hole at the center of the Milky Way should […]
If we’re migrating slowly away, is our speed changing, too? Every year, planet Earth completes one revolution around the Sun while spinning on its axis. On a year-to-year basis, our […]
Science doesn’t exist in a cultural and existential vacuum and its teaching shouldn’t either.
Every observation out into deep space is also a look back in time. Whenever you observe an object, you aren’t viewing it in its present state. When one of Jupiter’s moons […]
I’m not saying it’s not aliens, but it’s not aliens. When it comes to life in the Universe, we still have no definitive answer to the biggest question of all, “are […]
There are exposed planetary cores orbiting stars, and we may have already found them. When we take a look at the planets in our Solar System, there’s a pretty clear difference […]
Think there are habitable super-Earths out there? Think again. Here in our Solar System, we have two very distinct types of planets: small, terrestrial, rocky worlds, with thin (or no) atmospheres […]