In the coming decade, NASA and the ESA will be sending two dedicated missions that will explore Jupiter’s moon Europa. These missions are known as the Europa Clipper and the JUpiter ICy moons Explorer (JUICE) missions, which will fulfill a dream that has been decades in the making – searching […]
Neutron Stars Have Mountains, They’re Just a Fraction of a Millimeter High
The universe has some very extreme places in it – and there are few places more extreme than the surface of a neutron star. These ultradense objects form after a supergiant star collapses into a sphere about 10 kilometers (6 miles) in diameter. Their surface is extreme because of the […]
Here are the First New Pictures From the Fully Operational Hubble
The astronomy community breathed a huge sigh of relief earlier this week when the Space Telescope Science Institute announced the Hubble Space Telescope’s major computer issues had been fixed after a grueling month of recovery work. They had to bring in every expert they could – even retired engineers and […]
Ions Surf Through Jupiter’s Magnetic Field, Triggering its Auroras
Auroras come in many shapes and sizes. Jupiter is well known for its spectacular complement of bright polar lights, which also have the distinction of appearing in the X-ray band. These auroras are also extreme power sources, emitting almost a gigawatt of energy in a few minutes. But what exactly […]
New Images of Mars From China’s Rover
On May 14th, 2021, the China National Space Agency (CNSA) achieved another major milestone when the Tianwen-1 lander successfully soft-landed on Mars, making China the second nation in the world to land a mission on Mars and establish communications from the surface. Shortly thereafter, China National Space Agency (CNSA) shared […]
WIMPS vs. Axions: What is dark matter?
Dark matter rules every galaxy. But what exactly is it? Astronomers believe it to be some kind of new, exotic particle. You may have heard some terms tossed around, like WIMPs or axions. Let’s explore what those terms actually mean.
WIMPS vs. Axions: What is dark matter?
Dark matter rules every galaxy. But what exactly is it? Astronomers believe it to be some kind of new, exotic particle. You may have heard some terms tossed around, like WIMPs or axions. Let’s explore what those terms actually mean.
Is the Universe a Fractal?
We find examples of fractals everywhere in nature. Tree branches, snowflakes, river deltas, cloud formations, and more. So it’s natural to ask the ultimate question: is the entire universe one giant fractal? The answer is…no, but sorta yes.
Don’t Be Surprised if EmDrive Experiments Never Work
Every few years the “EmDrive”, a proposed method of generating rocket thrust without any exhaust, hits the news. Each time, everyone asks: could this be it? Could this be the technological leap to revolutionize spaceflight?
How did Supermassive Black Holes Form? Collapsing Dark Matter Halos can Explain Them
We don’t quite understand how the first supermassive black holes formed so quickly in the young universe. So a team of physicists are proposing a radical idea. Instead of forming black holes through the usual death-of-a-massive-start route, instead giant dark matter halos directly collapsed, forming the seeds of the first […]