For the first time in many years, there’s currently a comet visible to the naked eye in Earth’s night sky: comet NEOWISE. For the first time in many years, there’s currently […]
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The Mars 2020 rover is set to launch in July of the same year, setting the stage for years and years of science on the Red Planet.
Two Apollo 11 astronauts question NASA’s planetary safety procedures.
Without quantum physics, the Sun wouldn’t shine at all. Earth, as we know it, is only teeming with life because of the influence of our Sun. Its light and heat provides […]
Regularities, which we associate with laws of nature, require an explanation.
The images and our best computer models don’t agree.
A NASA robot on Mars sends back unusual findings, including timed magnetic pulses.
A single lifetime is more than enough to take you to the limits of the Universe. Right now, there are only three things limiting how far our spacecrafts can take […]
With tens of thousands of satellites requiring AI-control to avoid collisions, a single solar flare could everything. Over the next few years, the night sky and the volume of space […]
The TESS satellite captures rare images of a cataclysmic event in a faraway galaxy.
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The object, originally dubbed “Ultima Thule,” was renamed to “Arrokoth” due to the connection between the word “Thule” and the Nazis.
It might have been Einstein’s greatest blunder, but it’s our leading theory today. One of the most mysterious components in the entire Universe is dark energy, which — if we’re being honest with […]
Entropy always increases, but that doesn’t mean it was zero to start with. One of the most inviolable laws in the Universe is the second law of thermodynamics: that in any […]
If you think that the Moon is only good for reflecting sunlight, you’ve got another think coming. To human eyes, the Moon is the second brightest visible object, trailing only the […]
In principle, the laws of physics are the same forwards and backwards. But in practice, time only runs in one direction. Most of the laws of physics are the same […]
A binary white dwarf in a tight, super-fast rotation looks to be pumping out gravitational waves.
There’s a boundary to how far back we can observe everything that exists. Despite everything we’ve learned about our Universe, there are many existential questions that remain unanswered. We don’t know […]
As the Universe ages, will it eventually fade away entirely? The earliest signal we’ve ever directly detected from the Universe comes to us from shortly after the Big Bang: when […]
It’s 13.8 billion years old, with an uncertainty of just 1%. Here’s how. How old is the Universe? For generations, people argued over whether the Universe had always existed, whether it […]
MIT engineers devise a decision map to identify the best mission type to deflect an incoming asteroid.
And what role, if any, does gravity play? While most of us have never had the opportunity to go into space, we all have the chance to dream about it and […]
‘Battlefield maps’ show continent under attack from hostile invaders.
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 […]
Whatever’s lurking out there, it isn’t all, or even mostly, normal matter. When it comes to the Universe, it’s only natural to wonder what, exactly, it is that makes everything up. […]
It marks the first time a plant has been grown on the moon.
It happened 13.8 billion years ago, so why hasn’t the radiation all passed over us by now? For the past 13.8 billion years, our Universe has been expanding, cooling, and gravitating. […]
From anti-gravity pens to cool model kits, these space-themed gifts will make any star gazer very happy.
After 13.8 billion years, there’s still a whole lot that’s changing as time goes on. With each new year that comes upon us, there are a slew of new events awaiting […]
When searching for extraterrestrial life, astronomers may want to look at planets with hydrogen-rich atmospheres.
In one of the ocean’s most lifeless places, scientists discover and resuscitate ancient organisms.