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NASA Hubble Space Telescope discovers group of multiple Small Black Holes

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Astronomers found something they weren’t expecting at the heart of the globular cluster NGC 6397: a concentration of smaller black holes lurking there instead of one massive black hole.

Globular clusters are extremely dense stellar systems, which host stars that are closely packed together. These systems are also typically very old — the globular cluster at the focus of this study, NGC 6397, is almost as old as the universe itself. This cluster resides 7,800 light-years away, making it one of the closest globular clusters to Earth. Due to its very dense nucleus, it is known as a core-collapsed cluster.

The amount of mass a black hole can pack away varies widely from less than twice the mass of our Sun to over a billion times our Sun's mass. Midway between are intermediate-mass black holes weighing roughly hundreds to tens of thousands of solar masses. So, black holes come small, medium, and large. (NASA, ESA, T. Brown, S. Casertano, and J. Anderson (STScI))

The amount of mass a black hole can pack away varies widely from less than twice the mass of our Sun to over a billion times our Sun’s mass. Midway between are intermediate-mass black holes weighing roughly hundreds to tens of thousands of solar masses. So, black holes come small, medium, and large. (NASA, ESA, T. Brown, S. Casertano, and J. Anderson (STScI))

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NASA’s TESS Satellite images used to create Northern Sky Panorama

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered 74 exoplanets, or worlds beyond our solar system. Astronomers are sifting through some 1,200 additional exoplanet candidates, where potential new worlds await confirmation. More than 600 of these candidates lie in the northern sky.

TESS locates planets by simultaneously monitoring many stars over large regions of the sky and watching for tiny changes in their brightness. When a planet passes in front of its host star from our perspective, it blocks some of the star’s light, causing it to temporarily dim.

This detail of the TESS northern panorama features a region in the constellation Cygnus. At center, the sprawling dark nebula Le Gentil 3, a vast cloud of interstellar dust, obscures the light of more distant stars. A prominent tendril extending to the lower left points toward the bright North America Nebula, glowing gas so named for its resemblance to the continent. (NASA/MIT/TESS and Ethan Kruse (USRA))

This detail of the TESS northern panorama features a region in the constellation Cygnus. At center, the sprawling dark nebula Le Gentil 3, a vast cloud of interstellar dust, obscures the light of more distant stars. A prominent tendril extending to the lower left points toward the bright North America Nebula, glowing gas so named for its resemblance to the continent. (NASA/MIT/TESS and Ethan Kruse (USRA))

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NASA’s Transiting Exoplanet Survey Satellite observes new details about Ultrahot World

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Measurements from NASA’s Transiting Exoplanet Survey Satellite (TESS) have enabled astronomers to greatly improve their understanding of the bizarre environment of KELT-9 b, one of the hottest planets known.

“The weirdness factor is high with KELT-9 b,” said John Ahlers, an astronomer at Universities Space Research Association in Columbia, Maryland, and NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “It’s a giant planet in a very close, nearly polar orbit around a rapidly rotating star, and these features complicate our ability to understand the star and its effects on the planet.”

This illustration shows how planet KELT-9 b sees its host star. Over the course of a single orbit, the planet twice experiences cycles of heating and cooling caused by the star’s unusual pattern of surface temperatures. Between the star’s hot poles and cool equator, temperatures vary by about 1,500 F (800 C). (NASA's Goddard Space Flight Center/Chris Smith (USRA))

This illustration shows how planet KELT-9 b sees its host star. Over the course of a single orbit, the planet twice experiences cycles of heating and cooling caused by the star’s unusual pattern of surface temperatures. Between the star’s hot poles and cool equator, temperatures vary by about 1,500 F (800 C). (NASA’s Goddard Space Flight Center/Chris Smith (USRA))

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NASA’s TESS Satellite, Spitzer Space Telescope find Large World Orbiting Young Star

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – For more than a decade, astronomers have searched for planets orbiting AU Microscopii, a nearby star still surrounded by a disk of debris left over from its formation. Now scientists using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and NASA’s retired Spitzer Space Telescope report the discovery of a planet about as large as Neptune that circles the young star in just over a week.

The system, known as AU Mic for short, provides a one-of-kind laboratory for studying how planets and their atmospheres form, evolve and interact with their stars.

This image is an artist's concept of the planet AU Mic b and its young parent star. The faint band of light encircling the pair is a disk of gas and dust from which both the star and the planet formed. (NASA's Goddard Space Flight Center/Chris Smith (USRA))

This image is an artist’s concept of the planet AU Mic b and its young parent star. The faint band of light encircling the pair is a disk of gas and dust from which both the star and the planet formed. (NASA’s Goddard Space Flight Center/Chris Smith (USRA))

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NASA says Young Giant Planets could help answer questions on how Planets Form

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA says that for most of human history our understanding of how planets form and evolve was based on the eight (or nine) planets in our solar system. But over the last 25 years, the discovery of more than 4,000 exoplanets, or planets outside our solar system, changed all that.

Among the most intriguing of these distant worlds is a class of exoplanets called hot Jupiters. Similar in size to Jupiter, these gas-dominated planets orbit extremely close to their parent stars, circling them in as few as 18 hours.

This image shows a type of gas giant planet known as a hot Jupiter that orbits very close to its star. Finding more of these youthful planets could help astronomers understand how they formed and if they migrate from cooler climes during their lifetimes. (NASA/JPL-Caltech)

This image shows a type of gas giant planet known as a hot Jupiter that orbits very close to its star. Finding more of these youthful planets could help astronomers understand how they formed and if they migrate from cooler climes during their lifetimes. (NASA/JPL-Caltech)

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Start Planning Your Coronavirus Pandemic Recovery Now

 

As many countries enter phase three of the COVId-19 Coronavirus, pandemic management protocols (PMPs) will define how we work, travel, congregate, and connect as a society.

Forrester ResearchCambridge, MAAccording to Forrester (NASDAQ: FORR), many countries across North America and Europe are entering phase three (management) of the COVID-19 Coronavirus pandemic, expected to last from mid-May through the end of the year 2020 and into the year 2021.

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NASA’s TESS Satellite discovers Planet with Two Stars

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – In 2019, when Wolf Cukier finished his junior year at Scarsdale High School in New York, he joined NASA’s Goddard Space Flight Center in Greenbelt, Maryland, as a summer intern. His job was to examine variations in star brightness captured by NASA’s Transiting Exoplanet Survey Satellite (TESS) and uploaded to the Planet Hunters TESS citizen science project.

“I was looking through the data for everything the volunteers had flagged as an eclipsing binary, a system where two stars circle around each other and from our view eclipse each other every orbit,” Cukier said.

In this illustration, TOI 1338 b is silhouetted by its host stars. TESS only detects transits from the larger star. (NASA's Goddard Space Flight Center/Chris Smith)

In this illustration, TOI 1338 b is silhouetted by its host stars. TESS only detects transits from the larger star. (NASA’s Goddard Space Flight Center/Chris Smith)

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NASA’s planet hunting TESS Satellite discovers Black Hole ripping apart a Star

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – For the first time, NASA’s planet-hunting Transiting Exoplanet Survey Satellite (TESS) watched a black hole tear apart a star in a cataclysmic phenomenon called a tidal disruption event. Follow-up observations by NASA’s Neil Gehrels Swift Observatory and other facilities have produced the most detailed look yet at the early moments of one of these star-destroying occurrences.

“TESS data let us see exactly when this destructive event, named ASASSN-19bt, started to get brighter, which we’ve never been able to do before,” said Thomas Holoien, a Carnegie Fellow at the Carnegie Observatories in Pasadena, California.

This illustration shows a tidal disruption, which occurs when a passing star gets too close to a black hole and is torn apart into a stream of gas. Some of the gas eventually settles into a structure around the black hole called an accretion disk. (NASA's Goddard Space Flight Center)

This illustration shows a tidal disruption, which occurs when a passing star gets too close to a black hole and is torn apart into a stream of gas. Some of the gas eventually settles into a structure around the black hole called an accretion disk. (NASA’s Goddard Space Flight Center)

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NASA says Black Hole Seeds Missing in Cosmic Garden

 

NASA - National Aeronautics and Space AdministrationWashington, D.C. – In the vast garden of the universe, the heaviest black holes grew from seeds states NASA. Nourished by the gas and dust they consumed, or by merging with other dense objects, these seeds grew in size and heft to form the centers of galaxies, such as our own Milky Way.

But unlike in the realm of plants, the seeds of giant black holes must have been black holes, too. And no one has ever found these seeds – yet.

This artist's conception illustrates one of the most primitive supermassive black holes known (central black dot) at the core of a young, star-rich galaxy. (NASA/JPL-Caltech)

This artist’s conception illustrates one of the most primitive supermassive black holes known (central black dot) at the core of a young, star-rich galaxy. (NASA/JPL-Caltech)

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NASA’s Chandra X-ray Observatory discovered Cloaked Black Hole

 

NASA - National Aeronautics and Space AdministrationHuntsville, AL – Using NASA’s Chandra X-ray Observatory, astronomers have discovered evidence for the farthest “cloaked” black hole found to date. At only about 6% of the current age of the universe, this is the first indication of a black hole hidden by gas at such an early time in the history of the cosmos.

Supermassive black holes, which are millions to billions of times more massive than our Sun, typically grow by pulling in material from a disk of surrounding matter. Rapid growth generates large amounts of radiation in a very small region around the black hole. Scientists call this extremely bright, compact source a “quasar.”

Data from NASA’s Chandra X-ray Observatory have revealed what may be the most distant shrouded black hole. (X-ray: NASA/CXO/Pontificia Universidad Catolica de Chile/F. Vito; Radio: ALMA (ESO/NAOJ/NRAO); optical: Pan-STARRS)

Data from NASA’s Chandra X-ray Observatory have revealed what may be the most distant shrouded black hole. (X-ray: NASA/CXO/Pontificia Universidad Catolica de Chile/F. Vito; Radio: ALMA (ESO/NAOJ/NRAO); optical: Pan-STARRS)

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