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In Anticipation of New Horizons Entering Interstellar Space, Researchers are Developing a Solar Wind Forecasting Method
Southwest Research Institute (SwRI) scientists are using a solar wind forecasting method combined with analytic and numerical heliosphere models to find out where the first plasma boundary of the outer heliosphere lies as NASA’s New Horizons spacecraft hurtles toward this mysterious region of space.
NASA’s Hubble Spies Stellar Sparkler for July 4th
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3 min read
NASA’s Hubble Spies Stellar Sparkler for July 4th Ancient stars shine in red, white and blue from a globular cluster almost as old as the universe itself in this image from NASA’s Hubble Space Telescope. NASA, ESA, and A. Dotter (Dartmouth College); Processing: Gladys Kober (NASA/Catholic University of America)Red, white, and blue stars glitter like a sparkler being waved on a dark night in this new image from NASA’s Hubble Space Telescope. NASA released this image to celebrate the United States’ 250th anniversary, as the agency carries forward America’s legacy of exploration.
Located in the outer halo of our Milky Way galaxy, globular cluster NGC 6426 is a spherical collection of stars bound together by their mutual gravity, one of 150 known globular clusters in our galaxy. These groups of stars are thought to form as a unit from the same collapsing cloud of gas, and thus the stars in them typically have similar ages. The stars in globular clusters tend to be ancient. At approximately 13 billion years old, NGC 6426 is one of the Milky Way’s oldest globular clusters and almost as old as the universe itself (13.7 billion years).
In this image, blue indicates the shorter wavelengths that are visible light, while red depicts the longer wavelengths of visible light, as well as some near-infrared light. Colors in Hubble images are chosen based on standard image processing techniques to best represent the wavelengths of light that pass through the filters used in the observation. Because the color and temperature of stars are directly related, we know that the blue stars in this image are hotter and the red stars are cooler.
The stars of NGC 6426 have low metallicity, which means they have fewer elements that are heavier than hydrogen and helium. These conditions resemble those of the early universe, when matter was mostly helium and hydrogen and heavier elements were just beginning to form via nuclear fusion within massive stars.
Researchers have found evidence for two chemically distinct populations of stars in NGC 6426, indicating that the slightly younger and more metallic stars were enriched with material from the explosive deaths of the cluster’s earlier stars. Massive stars that explode as supernovae fling elements heavier than hydrogen and helium into the universe, seeding it with materials to build new stars and planets.
Hubble took this image as part of a study of globular clusters in the Milky Way’s halo intended to determine their ages and shed light on the formation and evolution of the galaxy. Over the past three decades in orbit, Hubble has fundamentally changed our understanding of the universe. Its discoveries are expanded upon and complemented by observations from other NASA missions like the infrared-detecting James Webb Space Telescope and the Nancy Grace Roman Space Telescope, scheduled to launch in late summer.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Explore MoreHubble’s Star Clusters
Exploring the Birth of Stars
Hubble’s Nebulae
Media Contact:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Hubble Celebrates Nation’s 250th Birthday
Commemorating the United States’ 250th anniversary with new images and more!
What Did Hubble See on Your Birthday?
Take a look at what cosmic wonders Hubble observed on your special day!
Hubble’s Star Clusters
These jewels of the night sky offer us a glimpse at the lifecycle of stars.
NASA’s Hubble Spies Stellar Sparkler for July 4th
- Hubble Home
- Overview
- Impact & Benefits
- Science
- Observatory
- Team
- Multimedia
- News
- More
3 min read
NASA’s Hubble Spies Stellar Sparkler for July 4th Ancient stars shine in red, white and blue from a globular cluster almost as old as the universe itself in this image from NASA’s Hubble Space Telescope. NASA, ESA, and A. Dotter (Dartmouth College); Processing: Gladys Kober (NASA/Catholic University of America)Red, white, and blue stars glitter like a sparkler being waved on a dark night in this new image from NASA’s Hubble Space Telescope. NASA released this image to celebrate the United States’ 250th anniversary, as the agency carries forward America’s legacy of exploration.
Located in the outer halo of our Milky Way galaxy, globular cluster NGC 6426 is a spherical collection of stars bound together by their mutual gravity, one of 150 known globular clusters in our galaxy. These groups of stars are thought to form as a unit from the same collapsing cloud of gas, and thus the stars in them typically have similar ages. The stars in globular clusters tend to be ancient. At approximately 13 billion years old, NGC 6426 is one of the Milky Way’s oldest globular clusters and almost as old as the universe itself (13.7 billion years).
In this image, blue indicates the shorter wavelengths that are visible light, while red depicts the longer wavelengths of visible light, as well as some near-infrared light. Colors in Hubble images are chosen based on standard image processing techniques to best represent the wavelengths of light that pass through the filters used in the observation. Because the color and temperature of stars are directly related, we know that the blue stars in this image are hotter and the red stars are cooler.
The stars of NGC 6426 have low metallicity, which means they have fewer elements that are heavier than hydrogen and helium. These conditions resemble those of the early universe, when matter was mostly helium and hydrogen and heavier elements were just beginning to form via nuclear fusion within massive stars.
Researchers have found evidence for two chemically distinct populations of stars in NGC 6426, indicating that the slightly younger and more metallic stars were enriched with material from the explosive deaths of the cluster’s earlier stars. Massive stars that explode as supernovae fling elements heavier than hydrogen and helium into the universe, seeding it with materials to build new stars and planets.
Hubble took this image as part of a study of globular clusters in the Milky Way’s halo intended to determine their ages and shed light on the formation and evolution of the galaxy. Over the past three decades in orbit, Hubble has fundamentally changed our understanding of the universe. Its discoveries are expanded upon and complemented by observations from other NASA missions like the infrared-detecting James Webb Space Telescope and the Nancy Grace Roman Space Telescope, scheduled to launch in late summer.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Explore MoreHubble’s Star Clusters
Exploring the Birth of Stars
Hubble’s Nebulae
Media Contact:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Hubble Celebrates Nation’s 250th Birthday
Commemorating the United States’ 250th anniversary with new images and more!
What Did Hubble See on Your Birthday?
Take a look at what cosmic wonders Hubble observed on your special day!
Hubble’s Star Clusters
These jewels of the night sky offer us a glimpse at the lifecycle of stars.
For July 4, NASA unveils an astronomical fireworks show, complete with sound effects
The rocket's red glare has nothing on these images from Chandra X-ray Observatory
How working memory could give rise to consciousness
Working memory is the information we need to access to complete the tasks we’re engaged in right now, and scientists think it may be closely entwined with consciousness
A New Study into Dark Matter in the Bullet Cluster Could Disprove its Existence
A study led by the University of Bonn presents new data that calls the existence of Dark Matter - a fundamental pillar of the current cosmological model - into question.
‘Hobbit’ hominins scavenged meat left over by Komodo dragons
‘Hobbit’ hominins scavenged meat left over by Komodo dragons
Ancient ‘hobbits’ feasted on Komodo dragons’ leftovers
The hominins may have gone on adventures, but they lacked key skills of modern humans
Bending Spacetime Reveals New Planet Hidden in Archived TESS Data
NASA’s Transiting Exoplanet Survey Satellite (TESS) has captured evidence of a Jupiter-like world orbiting another star, using a trick straight out of Einstein’s relativity: gravitational microlensing. The technique marks a first for TESS, and opens up the possibility of a whole new category of planets the spacecraft might uncover.
A volcano has erupted remnants of Earth's primordial magma ocean
A volcano has erupted remnants of Earth's primordial magma ocean
NASA’s Hubble Captures Crimson Cloud Sparkling with White, Blue Stars
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3 min read
NASA’s Hubble Captures Crimson Cloud Sparkling with White, Blue Stars A glowing landscape of gas and dust is heated and illuminated by a thriving population of young stars in the LH 95 region of the Large Magellanic Cloud. NASA, ESA, and N. Da Rio (The University of Virginia), G. De Marchi (European Space Agency – ESTEC), and D. Gouliermis (Universitat Heidelberg); Processing: Gladys Kober (NASA/Catholic University of America)Like fresh fireworks launched against a background of dissipating smoke, blue and white stars shine brilliantly against a crimson background of glowing gas in this image of stellar nursery LH 95 from NASA’s Hubble Space Telescope.
LH 95 is a region in the Large Magellanic Cloud, a dwarf galaxy that orbits the Milky Way. Low-mass infant stars live alongside massive blue giant stars in what is known as a stellar association, one of many in the Large Magellanic Cloud.
The LH 95 region’s most massive stars, possessing at least three times the mass of the Sun and visible here as the largest and brightest blue stars, expel ultraviolet radiation and stellar winds that both heat and shape the surrounding hydrogen gas. Dark filaments stand out in sharp contrast against the glowing hydrogen where denser dust lanes resist erosion.
In this image, blue indicates the shorter wavelengths that are visible light, while red depicts the longer wavelengths of visible light, as well as some near-infrared light. Colors in Hubble images are chosen based on standard image processing techniques to best represent the wavelengths of light that pass through the filters used in the observation. The gas of the nebula glows crimson due to hydrogen-alpha emissions.
Hydrogen-alpha is an excellent indicator of star formation, allowing astronomers to identify very young stars embedded in this glowing gas. Researchers found developing stars still gathering material from the disks of gas and dust around them. In fact, LH 95 is home to an extraordinary 2,500 stars that have accumulated almost all of their critical mass but have not yet “turned on” by beginning fusion reactions. These stars, called “pre-main-sequence stars,” have formed from collapsing clouds of gas and are still contracting. They will soon begin burning hydrogen in their cores to become full stars.
By studying these forming stars, researchers confirmed that the stars’ accretion rate ― the rate at which they accumulate matter ― decreased with age, as expected. However, they also learned that accretion can persist for several million years, longer than sometimes assumed. This information helps refine our understanding of how young stars keep growing and how their disks evolve.
Researchers noted that distinct generations of stars in LH 95 exist side-by-side, indicating that rather than forming stars in a single event, the region produces multiple stellar generations over an extended period.
The most massive star in LH 95 (above center, slightly left) has about 60-70 times the mass of the Sun and is about a million years younger than the rest of stars in the system, which appear to be around 4 million years old. Massive stars like these burn through their fuel quickly and die in supernova explosions.
With its rich stellar population, LH 95 is valued by astronomers for providing a way to observe forming stars at relatively close range in an environment with less obscuring dust than similar regions of the Milky Way.
As one of NASA’s flagship observatories, Hubble has produced a wealth of scientific discoveries over more than 30 years in orbit. Its observations are expanded upon and enhanced by observations with other NASA missions, including the infrared-detecting Webb Space Telescope and the upcoming Nancy Grace Roman Space Telescope, which is scheduled to launch in late summer.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Explore MoreHubble’s Nebulae
Exploring the Birth of Stars
Hubble’s Star Clusters
Media Contact:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Hubble Celebrates Nation’s 250th Birthday
Commemorating the United States’ 250th anniversary with new images and more!
What Did Hubble See on Your Birthday?
Take a look at what cosmic wonders Hubble observed on your special day!
Fourth of July Through Hubble’s Eyes
To commemorate the nation’s 250th birthday, Hubble shares 13 images for the nation’s 13 original colonies.
NASA’s Hubble Captures Crimson Cloud Sparkling with White, Blue Stars
- Hubble Home
- Overview
- Impact & Benefits
- Science
- Observatory
- Team
- Multimedia
- News
- More
3 min read
NASA’s Hubble Captures Crimson Cloud Sparkling with White, Blue Stars A glowing landscape of gas and dust is heated and illuminated by a thriving population of young stars in the LH 95 region of the Large Magellanic Cloud. NASA, ESA, and N. Da Rio (The University of Virginia), G. De Marchi (European Space Agency – ESTEC), and D. Gouliermis (Universitat Heidelberg); Processing: Gladys Kober (NASA/Catholic University of America)Like fresh fireworks launched against a background of dissipating smoke, blue and white stars shine brilliantly against a crimson background of glowing gas in this image of stellar nursery LH 95 from NASA’s Hubble Space Telescope.
LH 95 is a region in the Large Magellanic Cloud, a dwarf galaxy that orbits the Milky Way. Low-mass infant stars live alongside massive blue giant stars in what is known as a stellar association, one of many in the Large Magellanic Cloud.
The LH 95 region’s most massive stars, possessing at least three times the mass of the Sun and visible here as the largest and brightest blue stars, expel ultraviolet radiation and stellar winds that both heat and shape the surrounding hydrogen gas. Dark filaments stand out in sharp contrast against the glowing hydrogen where denser dust lanes resist erosion.
In this image, blue indicates the shorter wavelengths that are visible light, while red depicts the longer wavelengths of visible light, as well as some near-infrared light. Colors in Hubble images are chosen based on standard image processing techniques to best represent the wavelengths of light that pass through the filters used in the observation. The gas of the nebula glows crimson due to hydrogen-alpha emissions.
Hydrogen-alpha is an excellent indicator of star formation, allowing astronomers to identify very young stars embedded in this glowing gas. Researchers found developing stars still gathering material from the disks of gas and dust around them. In fact, LH 95 is home to an extraordinary 2,500 stars that have accumulated almost all of their critical mass but have not yet “turned on” by beginning fusion reactions. These stars, called “pre-main-sequence stars,” have formed from collapsing clouds of gas and are still contracting. They will soon begin burning hydrogen in their cores to become full stars.
By studying these forming stars, researchers confirmed that the stars’ accretion rate ― the rate at which they accumulate matter ― decreased with age, as expected. However, they also learned that accretion can persist for several million years, longer than sometimes assumed. This information helps refine our understanding of how young stars keep growing and how their disks evolve.
Researchers noted that distinct generations of stars in LH 95 exist side-by-side, indicating that rather than forming stars in a single event, the region produces multiple stellar generations over an extended period.
The most massive star in LH 95 (above center, slightly left) has about 60-70 times the mass of the Sun and is about a million years younger than the rest of stars in the system, which appear to be around 4 million years old. Massive stars like these burn through their fuel quickly and die in supernova explosions.
With its rich stellar population, LH 95 is valued by astronomers for providing a way to observe forming stars at relatively close range in an environment with less obscuring dust than similar regions of the Milky Way.
As one of NASA’s flagship observatories, Hubble has produced a wealth of scientific discoveries over more than 30 years in orbit. Its observations are expanded upon and enhanced by observations with other NASA missions, including the infrared-detecting Webb Space Telescope and the upcoming Nancy Grace Roman Space Telescope, which is scheduled to launch in late summer.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Explore MoreHubble’s Nebulae
Exploring the Birth of Stars
Hubble’s Star Clusters
Media Contact:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Hubble Celebrates Nation’s 250th Birthday
Commemorating the United States’ 250th anniversary with new images and more!
What Did Hubble See on Your Birthday?
Take a look at what cosmic wonders Hubble observed on your special day!
Fourth of July Through Hubble’s Eyes
To commemorate the nation’s 250th birthday, Hubble shares 13 images for the nation’s 13 original colonies.
Astronomers Spot an Extremely Rare Galaxy Mega-Merger
Scale in the universe is hard to understand from a purely human perspective. Many times the math just doesn’t sit well with our brains that evolved to capture and process data about the world around us rather than groking the complexities of stellar dynamics and galaxy mergers. But every once in a while astronomers find something that, if we can wrap our heads around the numbers, gives a sense of just how big the universe is. That is precisely what a new paper, available in preprint on arXiv from a group of astronomers led by Z.L. Wen of the Chinese Academy of Sciences, hopes to do when it describes a merger of not one, not two, but six supermassive galaxies and the active dynamics they’re subject to.
The most spectacular aurora of the εpsilon mission (so far!)
This timelapse was published on social media by ESA astronaut Sophie Adenot with the following caption:
Day 139, orbit 2155 — After the pictures (available in HD on my Flickr account), I'm so happy to finally share the timelapse of the most spectacular aurora of the εpsilon mission so far!
Watching this glowing green ribbon shimmer and dance, it's easy to lose yourself completely in the magic of the moment. Turn the sound on for the full experience – the music was carefully chosen to bring you as close as possible to what I felt watching this from space .
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Jour 139, orbite 2155 – Après les photos (disponibles en HD sur mon compte Flickr), je suis très heureuse de pouvoir enfin partager avec vous le timelapse de l’aurore la plus spectaculaire (jusqu’à présent !) de la mission εpsilon !
Difficile de ne pas céder à la magie de l’instant en regardant ce ruban de lumière verte onduler et danser sous nos yeux... Activez le son pour vivre pleinement l’expérience : la musique a été choisie avec soin pour évoquer les émotions que j’ai ressenties en admirant ce spectacle depuis l’espace