Astronomers have detected an enormous extragalactic structure hiding in an uncharted region of space far beyond the Milky Way’s center. This phantom region, known as the zone of avoidance, is a blank spot on our map of the universe, comprising somewhere between 10% and 20% of the night sky. The reason we can’t see it … Read more
Scattered across the vacuum of space are stars, galaxies, stellar remnants and other objects that are billions upon billions of years old. The age of the universe is now thought to be about 13.8 billion years — almost unfathomable. But how do we know that? We can determine the age of the universe (to an … Read more
On Dec. 24, 2021, a magnitude 4 marsquake rocked the Red Planet, triggering sensors on NASA’s Insight lander. Now, scientists know exactly what shook things up. Before and after images captured by NASA’s Mars Reconnaissance Orbiter confirmed it was a meteoroid impact –— the largest on record in the entire solar system. The impact crater, … Read more
A series of sudden and colossal spikes in radiation levels across Earth’s history could have come from a series of unknown, unpredictable and potentially catastrophic cosmic events, a new study has revealed. Named Miyake events after the lead author of the first study to describe them, the spikes occur roughly once every 1,000 years or … Read more
As Elton John once sang, “Mars ain’t the kind of place to raise your kids; in fact, it’s cold as hell.” But new research suggests that Martian chill could allow bacteria to survive for up to 280 million years below the planet’s surface. The finding raises hopes that traces of ancient life — or even … Read more
Among the countless stars glittering in the vastness of space, some are so old they have experienced the dawn of the universe, and others are so young that not even the most powerful telescopes on Earth have been able to observe them. But is it possible to know which star is the youngest and which … Read more
A potentially hazardous near-Earth asteroid is spinning faster and faster every year, and researchers aren’t sure why. The space rock, known as 3200 Phaethon, is around 3.4 miles (5.4 kilometers) wide, and its orbit through the solar system takes it closer to the sun than any other named asteroid, reaching a minimum distance of around … Read more
Astronomers have spotted a black hole mysteriously spewing up chunks of a devoured star several years after consuming it. The event, which scientists have classified as AT2018hyz, began in 2018 when astronomers saw the black hole ensnare a hapless star in its strong gravitational pull before shredding it to pieces. Then, three years later, in … Read more
Ancient microbial life on Mars could have destroyed the planet’s atmosphere through climate change, which ultimately led to its extinction, new research has suggested. The new theory comes from a climate modeling study that simulated hydrogen-consuming, methane-producing microbes living on Mars roughly 3.7 billion years ago. At the time, atmospheric conditions were similar to those … Read more
Researchers studying the aftermath of a gargantuan black hole collision may have confirmed a gravitational phenomenon predicted by Albert Einstein a century ago. According to new research published today (Oct. 12) in the journal Nature (opens in new tab), the phenomenon — which is known as precession and is similar to the wobbling motion sometimes … Read more
