Buzz
The universe brims with awe-inspiring, mysterious places and phenomena. Some of these are so mind-bending that they challenge the very boundaries of what we thought was possible.
From plasma waves that ripple across space to minuscule stars that outshine our Sun with jaw-dropping energy, and even real-life ‘water worlds’ far more extreme than anything Hollywood has ever imagined, these revelations span the full range of the unimaginable.
10. Ganymede’s Unmatched ‘Chorus Waves’
Space may appear mostly empty, yet it teems with charged particles racing through it. Under the right conditions, these particles can 'dance,' moving in synchronized waves.
This phenomenon occurs around Ganymede, where particles are stirred by Jupiter's magnetosphere, which is 20,000 times more powerful than Earth's. This effect is amplified by Ganymede's own magnetic field, producing a powerful region of chorus waves, or low-frequency plasma oscillations.
The plasma waves give rise to mesmerizing phenomena such as auroras, destructive ‘killer’ electrons, and chirping, whistling sounds (once converted for human hearing).
Thanks to the intense magnetic activity, Ganymede’s electromagnetic ‘whistle’ (the strength of the chorus wave) is a million times more powerful than anything else in the solar system, even surpassing mighty Jupiter itself.
9. A Massive Blue Asteroid That Turns Into A Scorched Metal Wasteland
Asteroid 3200 Phaethon has recently proven to be even stranger than astronomers expected. Phaethon is a rare asteroid-comet hybrid with an erratic, comet-like orbit that brings it from the Sun’s vicinity to beyond Mars.
It's slightly lighter than charcoal and appears blue due to its exposure to temperatures of 815 degrees Celsius (1,500 °F). This intense heat turns the 5-kilometer-wide (3.1 mi) asteroid into a molten hellscape, where metal is transformed into ‘goo.’
As a bonus, Phaethon is likely the source of the spectacular Geminid meteor shower that lights up the sky every December.
8. Red Dwarf Star Systems Ravaged By Catastrophic Flares
Three-quarters of the stars in our galaxy are red dwarfs, like our closest stellar neighbor, Proxima Centauri. These stars have only 7.5–50 percent of the Sun’s mass, but they release solar flares packed with intense UV radiation that our larger star can't replicate.
The most powerful flares are produced by younger red dwarfs. The ones observed by Hubble were just 40 million years old and emitted flares 100–1,000 times stronger than those of older red dwarfs.
One such event, called 'Hazflare,' was more powerful than any flare our Sun has produced in a century of observations. In that time, our Sun's activity only occasionally matched the immense energy of Hazflare. This event was captured after just one day of monitoring red dwarfs, suggesting that these explosive flares may occur daily or even multiple times a day.
7. Water Clouds . . On A Failed Star
Brown dwarfs, often referred to as failed stars, can reach extraordinarily cold temperatures—such as WISE 0855, the coldest-known object beyond our solar system. It lies 7.2 light-years away, with a temperature of -23 degrees Celsius (-10 °F), and has five times the mass of Jupiter.
WISE 0855 is so frigid that it is just barely detectable by the most powerful infrared telescopes on Earth. Discovered in 2014, it became the faintest object ever detected at that wavelength using ground-based spectroscopy.
Though WISE 0855 resembles Jupiter, spectral analysis uncovered a wet, misty world, rich in 'water vapor and clouds.'
6. A Newborn Star Surrounded by the Foundations of Life
While most of the universe seems inhospitable to life, in 2015, astronomers discovered the first signs of 'building blocks' around the young star MWC 480.
Located in Taurus, a vast stellar nursery 455 light-years away, MWC 480 is still in its early stages, surrounded by a protoplanetary disk of dust and gas.
This star is larger than our Sun, shining 10 times more brightly and having twice its mass. Its surroundings are filled with organic compounds like methyl cyanide. The presence of these complex molecules in interstellar clouds suggests they can endure the formation of a solar system in larger quantities, likely surrounding other stars as well.
5. A Galaxy That Never Stops Creating Stars
COSMOS-AzTEC-1 is a colossal starburst galaxy located at the universe’s edge, 12.4 billion light-years away. It’s astonishing astronomers with its extraordinary star formation rate, about 1,000 times faster than the Milky Way.
In the process of galaxy formation, gas collapses inward under the influence of gravity, leading to the birth of stars. When stars die, their explosive supernovae generate outward pressure, balancing the forces of collapse and expansion.
However, COSMOS-AzTEC-1 is an unstable and unbalanced system. Gravity is compressing the gas and triggering an uncontrollable surge in star formation across two enormous debris clouds, surprisingly positioned far from the galaxy's center, where star formation typically occurs.
4. Jupiter’s Fiery Geometric Storms
The billion-dollar Juno mission has delivered a wealth of new data on Jupiter, including images showcasing intriguing storms at the planet's previously unexplored poles.
At the north pole, Juno's infrared instruments detected a massive Earth-sized cyclone at the center, surrounded by eight smaller storms, each ranging from 4,000 to 4,700 kilometers (2,500 to 2,900 miles) in diameter, spinning at speeds of 354 kilometers per hour (220 mph). A similarly enormous cyclone was found at the south pole, encircled by five storms up to 6,900 kilometers (4,300 miles) wide.
Curiously, these powerful category 5 storms are neither drifting across the poles nor merging into larger whirlpools, as would typically be expected from a swirling, rapidly rotating gas giant.
3. Scorching ‘Water Worlds’
New research indicates that water-rich planets are incredibly common. Analyzing 4,000 known exoplanets, models revealed that those with 1.5 times the Earth’s radius are rocky, while those 2.5 times larger are overwhelmingly dominated by water.
However, this is far from your average Earth water. A thick vaporous layer envelops the planet, and beneath it, you could find liquid oceans with properties shaped by extreme pressures and temperatures reaching up to 538 degrees Celsius (1,000 °F).
In total, 35 percent of exoplanets larger than Earth are believed to be abundant in water, with many of them potentially having water make up to 50 percent of their mass, compared to Earth’s meager 0.02 percent.
2. A Brown Dwarf’s Sand And Metal Rain
The brown dwarf 2MASS J21392676+0220226, located 47 light-years away, is as extraordinary as its lengthy name. In under eight hours of observation, astronomers witnessed its brightness fluctuate by 30 percent, a phenomenon never before seen in a brown dwarf.
One possible explanation is that hotter, deeper layers are briefly visible through a gap in the atmosphere. However, researchers suggest a more thrilling possibility: we're witnessing a colossal storm, a much grander version of Jupiter’s Great Red Spot, which is already three times the size of Earth.
What makes it even more deadly is that the violent storm clouds are composed of rock and metal, as silicates and metals condense and pour down onto the failed star.
1. Europa’s Chemical Mixer
Jupiter’s moon Europa is widely considered the most promising place to search for extraterrestrial life. It was previously known that beneath its icy surface, this Galilean moon harbors a vast, 100-kilometer-deep (62 mi) ocean. However, recent evidence suggests that the ocean interacts with the surface and even with its neighboring moon, Io.
Spectrometric analysis has revealed an unexpected presence of epsomite, a magnesium sulfate salt, on Europa’s surface. This compound forms through the addition of sulfur, which is irradiated from Io, the most volcanic body in the solar system.
This sulfur combines with magnesium salts that leak from Europa’s ocean, making the moon’s surface a more complex and Earth-like mix of substances than was previously believed.
