Even though the leftover glow from the Big Bang creates a bath of radiation at only 2.725 K, some places in the Universe get even colder.
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It started with a bang, but won’t end with one. Instead, it will “rage against the dying of the light” like nothing you’ve ever imagined.
The upcoming launch of the James Webb Space Telescope is the event of a lifetime.
Even at its faintest, Venus always outshines every other star and planet that’s visible from Earth, and then some!
Based on the atoms that they’re made out of, the innermost planet should always be the densest. Here’s why Earth beats Mercury, hands down.
Chemical energy, where electrons transition in atoms, powers the reactions we see. But two other types hold more promise than all the rest.
Want some crazy space phenomena? You don’t have to leave the neighborhood for it.
And why, even at its faintest, it always outshines every other star and planet. If you’ve been looking to the west after sunset recently, you may have noticed that there’s one […]
No matter how your year went, Hubble’s views of the Universe never disappoint. Year after year, Hubble’s telescopic views are unparalleled. Saturn, its rings, and 5 of its moons are […]
In 2006, Pluto was demoted in a very controversial decision. Unless you ignore nearly all of planetary science, it’ll never be one again.
The most unique interloper into our Solar System has a natural explanation that fits perfectly — no aliens required.
The recently discovered Oort cloud comet, Bernardinelli–Bernstein, has the largest known nucleus: 119 km. Here’s what it could do to Earth.
Already 14 billion miles from the Sun, Voyager 1 is speeding away at 38,000 mph.
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 mission could launch as soon as the 2030s, the researchers said.
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 […]
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.
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 […]
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 […]
NASA is scrapping its Apollo-era launcher platform to make room for new infrastructure that will support upcoming Artemis missions.
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 […]
The odds are slim, but the consequences would be devastating. Here’s what would happen, plus how to avoid it.
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 surface and atmosphere is colored by ferric oxides. Beneath a very thin layer, mere millimeters deep in places, it’s not red anymore.
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 […]
On other planets, blue skies and red sunsets aren’t the norm.
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 […]