The Sun dominates the Solar System in almost every way imaginable, yet much of its inner workings have been hidden from humanity. Over the centuries, and especially in the last few decades, technological advancements allowed us to ignore our mothers’ exhortations and stare at the Sun for as long as we want. We’ve learned a lot from all those observations.
A new study shows how the Sun experiences its own ‘meteor showers.’
Sometimes an image is so engrossing that we can ignore what it’s telling us about its subject and just enjoy the splendour. That’s certainly true of this image of NGC 5068 released by the ESA. But Universe Today readers are curious, and after enjoying the galactic portrait for a while, they want to know more.
The Venerable Hubble Space Telescope has cemented its place in history. Some call it the most successful science experiment ever. And while the James Webb Space Telescope might vie for that title, the Hubble does things that even the powerful JWST can’t do.
NASA’s Goddard Space Flight Center has released an hour-long time-lapse video that shows 133 days of the Sun’s life. The video shows the Sun’s chaotic surface, where great loops of plasma arch above the star along magnetic field lines. Sometimes the looping plasma reconnects to the star, and other times it’s ejected into space, creating hazardous space weather.
The JWST is grabbing headlines and eyeballs as its mission gains momentum. The telescope recently imaged M74 (NGC 628) with its Mid-Infrared Instrument (MIRI.) Judy Schmidt, a well-known amateur astronomy image processor, has worked on the image to bring out more detail.
The Universe is full of massive galaxies like ours, but astronomers don’t fully understand how they grew and evolved. They know that the first galaxies formed at least as early as 670 million years after the Big Bang. They know that mergers play a role in the growth of galaxies. Astronomers also know that supermassive black holes are involved in the growth of galaxies, but they don’t know precisely how.
A new Hubble survey of galaxies should help astronomers figure some of this out.
We’re about to reach a milestone that many thought we would never reach. After years of wrangling, cost overruns, threats of cancellation, and lobbying by the science community, the James Webb Space Telescope is only weeks away from its first images.
Direct images of exoplanets are rare and lack detail. Future observatories might change that, but for now, exoplanet images don’t tell researchers very much. They merely show the presence of the planets as blobs of light.
But a new study shows that only a few pixels can help us understand an exoplanet’s surface features.
In our age, we’ve grown accustomed to pictures of astronauts inside the International Space Station, as they float in zero-G and tend their science experiments. We’re even getting used to images of spacewalking astronauts. But this is something new.
An image of two astronauts on a spacewalk, taken from the ground.