A spacecraft has spied a spiky “hedgehog” on the sun and watched a solar flare in ways never done before. The Solar Orbiter, a collaboration between the European Space Agency…
Category: Space
Astrophysicists simulate a fuzzy dark matter galactic halo
Density slices zooming into a fuzzy dark matter halo. The plot on the right shows the reconstructed fuzzy dark matter wave function with self-consistent interference pattern and central solitonic core…
Ice at the moon’s poles might have come from ancient volcanoes
Four billion years ago, lava spilled onto the moon’s crust, etching the man in the moon we see today. But the volcanoes may have also left a much colder legacy:…
These are the first plants grown in moon dirt
That’s one small stem for a plant, one giant leap for plant science. In a tiny, lab-grown garden, the first seeds ever sown in lunar dirt have sprouted. This small…
Pulsars may power cosmic rays with the highest-known energies in the universe
The windy and chaotic remains surrounding recently exploded stars may be launching the fastest particles in the universe. Highly magnetic neutron stars known as pulsars whip up a fast and…
A century ago, Alexander Friedmann envisioned the universe’s expansion
For millennia, the universe did a pretty good job of keeping its secrets from science. Ancient Greeks thought the universe was a sphere of fixed stars surrounding smaller spheres carrying…
High-energy neutrinos may come from black holes ripping apart stars
When a star gets too close to a black hole, sparks fly. And, potentially, so do subatomic particles called neutrinos. A dramatic light show results when a supermassive black hole…
NASA’s InSight lander has recorded the largest Marsquake yet
Any Martians out there should learn to duck and cover. On May 4, the Red Planet was rocked by a roughly magnitude 5 temblor, the largest Marsquake detected to date,…
We finally have an image of the black hole at the heart of the Milky Way
There’s a new addition to astronomers’ portrait gallery of black holes. Astronomers announced May 12 that they have finally assembled an image of the supermassive black hole at the center…
The sun’s searing radiation led to the shuffling of the solar system’s planets
In the solar system’s early years, the still-forming giant planets sidestepped, did a do-si-do and then swung one of their partners away from the sun’s gravitational grasp. Things settled, and…
