This image captures the Tarantula Nebula in all of its cosmic glory. Astronomers study nebulae like this one to learn about how elements form and disperse throughout the galaxy, seeding space with planetary building blocks.
Clouds of dust and gas called nebulae speckle our galaxy. Some are ferocious cosmic factories that churn out baby stars by the hundreds of thousands, while others are grave markers of stars long dead. Astronomers study them to learn about how stars and planets form, and how ingredients are recycled in space.
But all that dust is difficult to see through, and nebulae are often so large that today’s most powerful space telescopes can only realistically study tiny patches of them. That’s where our soon-to-launch Nancy Grace Roman Space Telescope comes in.
This video of the Eagle Nebula showcases Roman’s superb resolution and wide field of view. It begins with a Hubble image of the famous Pillars of Creation superimposed on a ground-based image. The view then zooms out to show the full field of view of Roman’s Wide Field Instrument. Roman’s images will have the resolution of Hubble while covering an area about 100 times larger in a single pointing.
Roman will pair a large view of space with infrared heat vision. That combination is a game-changer for studying nebulae.
Here’s how it usually works. Ground-based telescopes take large but somewhat blurry images of a nebula. Then space-based observatories like our Hubble and James Webb space telescopes zoom in on small patches to show us the details of particularly interesting regions. But with Roman, we’ll get the big picture and incredible detail all in one.
That saves astronomers a lot of time, which opens up new avenues of exploration. For example, instead of spending several months stitching together hundreds of individual images of the Orion nebula with Hubble or Webb, Roman could cover it in a matter of hours in just a few snapshots.
Roman’s vast surveys will give us a census of stellar nurseries, where fledgling stars are being born from parent clouds of gas and dust. Studying these nebular nesting grounds will reveal millions of stellar embryos, newborn stars still swaddled in shrouds of dust, toddler stars that throw tantrums and flare unpredictably, and young stars that may have planetary systems forming around them.
A single Roman survey of our Milky Way galaxy will capture thousands of nebulae, unveiling planet formation and the full lifecycle of stars like never before. That includes their spectacular final acts.
This Hubble image showcases the Hourglass nebula, a young planetary nebula located about 8,000 light-years away.
Garden-variety stars like the Sun live fairly placid lives, casually churning out heat and light for billions of years by fusing hydrogen into helium. That nuclear process creates a lot of energy and outward pressure. For a long time, it’s held in check by the inward pull of gravity. But when a star runs out of fuel to fuse, gravity takes over.
Their cores shrink so fast that their outer shells of gas are left behind, which puff out and transform into unique and often psychedelic works of art called planetary nebulae (so-called because they looked similar to planets in early telescopes). Heftier stars meet more dramatic fates, with a runaway reaction that leads to the star’s detonation: a supernova explosion! Both result in nebulae that look like kaleidoscopic dreamscapes.
This image of supernova remnant W49B combines X-rays from NASA’s Chandra X-ray Observatory in blue and green, radio data from the NSF’s Very Large Array in pink, and infrared data from Caltech’s Palomar Observatory in yellow.
Star deaths create conditions so extreme that it can form new elements. The iron, oxygen, magnesium, silicon, sulfur, and nickel that together account for around 96% of the Earth's bulk were flung into space by supernova explosions. And some of the elements that make up your DNA, like carbon and nitrogen, were forged by smaller dying stars. You are literally made of stardust!
Roman will help us learn more about how elements were created and distributed throughout the galaxy, all while exploring many other cosmic questions.
This artist’s concept visualizes visible light in blue, showing how its short wavelength means it will easily run into dust particles. Longer wavelength infrared light, visualized in orange, can more easily pass through dust.
Roman’s infrared vision is key, because it will allow astronomers to see through the dust that often blocks telescopes that view other types of light. It’s hard for visible light to penetrate this dusty haze because the particles are the same size or even larger than the light’s wavelength. Since infrared light travels in longer waves, it hardly notices the tiny particles and can pass more easily through dusty regions.
By seeing through dust, we'll get a far better view of stars and other objects that are in nebulae and the cosmic structures that lie behind them. Astronomers will soon be able to chart our galaxy like never before!
An artist’s concept based on the final design of NASA’s Nancy Grace Roman Space Telescope.
We’re only about a month out from launch, and so close to a completely new understanding of the universe and our place within it. Follow along with Roman’s road to launch at nasa.gov/roman, and virtually tour the Roman observatory here.
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look i reblogged this because this piece FUCKS but then
then I looked in the notes and y’know.
some people seems confused.
Why a shopping cart with stained glass?
or This would be cool to shop with
or something about religion and NO
NO
THIS. Is about HOMES.
That style stained glass? Those diamonds? They speak to me, and they say “Townhouse”. and FANCY townhouse, at that. They say “City home, old home, a home that is RICH, a shelter from the storm and a safe place for a family”.
But on! a! shopping cart!
That evokes - to me - Homelessness.
The person on the street who had no other choice but to steal the best cart they could from a store’s corral just to have a way to transport the meager belongings that are all they fucking have in this world. And it’s NOT a home or a safe place or a shelter but it’s all you fucking have!
And this piece goes and puts them fucking together! AND NAMES IT.
Perhaps humans were never meant to spend most of their lives answering emails beneath fluorescent lights. Perhaps we were meant for slower things. For collecting pretty stones and pressing flowers between book pages. For lingering over tea that has gone cold because the conversation was too lovely to interrupt. For learning the names of constellations and watching rain gather on windowpanes. For making soup for people we love. For wandering without purpose. For creating things that don't need to be monetized. Maybe the part of you that doesn't want to work isn't lazy. Maybe it's homesick for a softer way of living. Because even in a gentler world, people would still create. They would still study medicine because easing another person's pain is a beautiful thing. They would still build technology because curiosity is part of being human. They would still teach, grow food, make art, discover new stars, and spend years solving problems simply because they care. People have always wanted to contribute. What we long to escape is not meaningful work, but work stripped of meaning. We are not dreaming of doing nothing. We are dreaming of a world where our gifts are offered freely, where innovation serves humanity, and where helping one another matters more than productivity metrics. A softer world would not be an empty one. It would be full of purpose.
TIL the reason you don’t find much Lyme’s Disease in California is not because we don’t have Ticks, or Lyme Disease Vectors; but rather: because the Western Fence Lizard (if you live anywhere in California this is your regular Garden Variety Lizard) has adapted a passive immune response that makes their blood lethal to Lyme Disease Bacteria. Any Tick that feeds on one gets its gut cleansed of Lyme Disease as a side effect.
There is a new vaccine going into Phase 3 trials from Valneva and Pfizer as well as a monoclonal antibody-based prophylactic treatment being researched at UMass!
Chibird is out roaming the streets, giving encouragement and support to unsuspecting people passing by. Chibird is like an undercover detective here, making sure your weekly mission is off to a good start. 😎
