Why Quasars are so Awesome | PBS Space Time - astrophysics/cosmology

Supermassive black holes create accretion disks,or quasars,when gas is swept into the disks.Quasi-stellar radio source 3C273 was discovered by a radio telescope in Australia.Jets of material are sometimes produced by quasars that travel near the speed of light.Quasars are also called an Active Galactic Nucleus,since they are associated with a supermassive black hole at the center of a galaxy.Quasars are so bright,we can see them at the edge of the universe.*Dr.Matt O'Dowd is an Australian astrophysicist and the presenter,writer or co-writer of PBS Space Time.*Cosmology is the study of the origin,evolution and structures of the universe.

The Cosmic Dark Ages - YouTube - PBS Space Time - astrophysics/cosmology

Dr.Matt O'Dowd is an Australian astrophysicist who presented and wrote this episode of PBS Space Time.Recombination:In the blazing heat of the Big Bang,atoms were stripped of their electrons.This was gradually reversed in the reionisation era.The first light was the Cosmic Microwave Backgoround (CMB).The first stars were formed about 150 million years after the Big Bang.Before that were the Cosmic Dark Ages.*Cosmology is the study of the origin,evolution and structures of the universe.

Tour: Supernova 1987A Pulsar Wind Nebula - YouTube - astrophysics/cosmology

NuStar,the Nuclear Spectroscopic Telescope Array is a space observatory operated by NASA/Jet Propulsion Laboratory-California Institute of Technology.Its mission is to study the universe in high energy X-rays to better understand the dynamics of black holes,exploding stars and extreme active galaxies.Together with the NASA Chandra X-ray Observatory and the Atacama Large Millimeter/submillimeter Array,a network of 60 radio telescopes in Chile,it has been studying SN 1987A,one of the most studied objects in recent times.SN 1987A is only about 170,000 light years from Earth,so is right next door.Within SN 1987A,a neutron star,the densest object in the universe,has been ascertained that is also a pulsar,the twin bursts of energy coming out of each end being detected as pulses.*Cosmology is the study of the origin,evolution and structures of the universe.*space observatories

Euclid’s 208-Gigapixel glimpse into the Universe - YouTube - ESA - astrophysics/cosmology

The ESA Euclid spacecraft has released the first page of a large cosmic atlas it is photographing,amounting about 1% of the total.The ultimate purpose of the atlas and Euclid spacecraft is to explore the role of dark matter and dark energy in the universe.The first page of the atlas is a huge 208-gigapixel mosaic.The images were collected from 260 observations collected in just two weeks.It was released on 15 OCT 2024 at the International Aeronautical Congress in Milan,Italy by ESA Director General Josef Aschbacher and Director of Science Carole Mundell.*Text by ESA and edited by Andrew Taylor*Cosmology is the study of the origin,evolution and structures of the universe.*Dark matter is about 27% of the universe,while dark energy is about 68% of the universe.

Did JWST Discover Dark Matter Stars? - YouTube - PBS Space Time - astrophysics/cosmology

The NASA/ESA/CSA James Webb Space Teslescope may have discovered a new class of objects called dark stars,which are actually very bright,bright enough for the JWST to detect them at their enormous distances,having existed just 400,000,000 years after the Big Bang.* Rules for dark matter particles to create dark stars:1.Particle cannot interact strongly with itself 2.Must have weak self-interaction 3.Must be able to annihilate each other*The self-annihilation of dark matter particles is what makes dark stars so bright.*Dark stars may have given rise to the supermassive black holes at the center of galaxies.*Dr.Matt O'Dowd is an Australian astrophysicist who is the presenter and writer or co-writer of PBS Space Time.*Cosmology is the study of the origin,evolution and structures of the universe.

Hubble’s Inside the Image: Cat’s Eye Nebula - YouTube - astrophysics/cosmology - NASA Goddard

The NASA/ESA Hubble Space Telescope has captured a stunning image of the Cat's Eye Nebula (NGC 6543),one of the most complex planetary nebulae known,with its intricate structure of concentric rings and high density knots.Dr.Ken Carpenter of NASA Goddard Space Flight Center delves into the beauty of this cosmic jewel discusses the the critical role Hubble plays in unraveling the secrets of stellar evolution and the lifecycle of stars.*Cosmology is the study of the origin of the universe and its structures.*Video credit:ESA/Hubble-M.Kornmesser and L.L.Christensen*Text by NASA Goddard and edited by Andrew Taylor

Chandra X-ray Observatory at 25 - See amazing 'never-before-seen' views' - YouTube - Space.com - astrophysics/cosmology

The Chandra X-ray Observatory was launched from Space Shuttle Columbia on 22 July 1999,NASA Astronaut Eileen Collins,commander.*Credit:NASA/CXC/A.Hobart*Cosmology is the study of the origins and structures of the universe.

Pillars of Creation Star in New Visualization from the NASA/ESA Hubble and the NASA/ESA/CSA Webb Space Telescopes - YouTube

Made famous in 1995 by the NASA/ESA Hubble Space Telescope,the Pillars of Creation in the heart of the Eagle Nebula have captured imaginations everywhere with their haunting,ethereal beauty.Now,NASA has released a new 3D visualization of these towering celestial structures using data from the NASA/ESA Hubble Space Telescope and the NASA/ESA/CSA James Webb Space Telescope.This is the most comprehensive amd detailed multiwavelength movie yet of this star-birthing region based on observational data from a science paper led by Anna Macleod,as associate professor at the University of Durham,United Kingdom.Macleod also served as a science advisor on the project.*Text by NASA and edited by Andrew Taylor* Credit:Greg Bacon,Space Telescope Science Institute (STsci) in Baltimore,Maryland:Producer*Frank Summers (STsci):Director*Anna Macleod (Durham):Science Advisor*The Eagle Nebula is about 7,000 light years from Earth in the constellation Serpens.*Cosmology is the study of the origin and structures of the universe.

Journey across starburst galaxy NGC 4449 in amazing Gemini North Telescope view - YouTube - astrophysics/cosmology

NGC 4449 is an irregular Magellanic type galaxy in the constellation Canes Venatici,and is around 13 million light years away.It is relatively close to the Local Group of galaxies that includes the Milky Way.The images were released to commemorate the 25th anniversary of the Gemini North Tescope.*NGC 4449 is a starburst galaxy,meaning it is a nursery for new stars.The Gemini North Telescope in the International Gemini Observatory,Mt.Mauna Kea,Hawaii,provided the images.*Cosmology is the study of the origins and structures of the universe.* Credit:Images and Videos-International Gemini Observatory/NOIRLab/National Science Foundation/AURA,N. Bartmann (NSF NOIRLab)