Rizwan Ayub Saadi

Astrophysicist & Writer

[rizwanayubsaadi]

✓ A black hole is not a hole!

Moreover,

• A black hole is not a hole in the classical sense, but a cosmic phenomenon where gravity is so intense that nothing, including light, can escape.

• Formed by a massive star's collapse, it warps spacetime, creating a gravitational prison with an event horizon that marks the point of no return.

• If it's not a hole then what this is;

• Think of it as a singularity, a point of infinite density and zero volume, where the laws of physics are pushed to the extreme.

• Rather than a void, a black hole is a boundary beyond which anything that enters is trapped, making it a mind-bending enigma that continues to fascinate and intrigue us, challenging our understanding of the universe and its mysteries.

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— Rizwan Ayub Saadi

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#rizwanayubsaadi #blackhole #astronomy #astrophysics #star #hole #gravity #space #spacetime #universe

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✓ Black Hole Influence Detected in Earth's Atmosphere from Distant Supernova Explosion

• In a groundbreaking discovery, scientists have observed the influence of a black hole on Earth's atmosphere.

• On October 9, 2022, multiple space telescopes, including the Swift Observatory and the Fermi Telescope, recorded a powerful gamma-ray burst.

• This event, detected from a distance of over 2 billion light years, was caused by the collapse of a massive star into a black hole following a supernova explosion.

• Remarkably, this gamma-ray burst not only occurred far outside Earth but also impacted our atmosphere.

• Satellites like the Chinese and Italian CSES, orbiting at around 500 kilometers, detected an unusual surge in free electron density caused by gamma rays ionizing atoms in the Earth's mesosphere.

• These findings highlight the extraordinary reach and power of cosmic events and their potential effects on our planet, even from vast distances in the universe.

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— Rizwan Ayub Saadi

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#rizwanayubsaadi #astronomy #astrophysics #blackhole #earth #supernova #messier #space #spacetime #universe

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It's my 4 year anniversary on Tumblr 🥳

[rizwanayubsaadi]

✓ Why is light not affected by magnetic fields?

• This question gets straight to the heart of how the universe likes to play its games.

• Imagine a crowded party.

• You see someone tugging on a friend's sleeve, urging them in a particular direction – that's kind of how a magnetic field works on charged particles, like electrons or protons.

• They each carry an electric charge—positive or negative—and this charge acts like a handle that electromagnetic forces can grab.

• Light, those photons zipping around the room, they're more like those elusive guests who slip through the crowd unnoticed.

• No handle, no electric charge, and thus nothing for the magnetic field to latch onto.

• It's as if magnets and light exist in slightly different dimensions; their paths can cross, but they never truly touch.

• Don't think that makes the story boring, though!

✓ Remember how light behaves as both a particle (photon) and a wave?

• Well, even though light particles themselves remain unaffected by magnetic fields, these fields can mess with the way them waves dance.

• And Faraday Effect: stick a material in a magnetic field and it can twist the polarization of light passing through, messing with the way the light wave wiggles.

• And hey, if things get really wild, like around those monster magnets called neutron stars, the magnetic fields are so intense they bend spacetime itself.

• Since light obediently follows the curves of the universe, it seems to bend too, even though it's a side effect, not a direct interaction with the magnetic field itself.

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— Rizwan Ayub Saadi

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#rizwanayubsaadi #astronomy #physics #astrophysics #light #deepspace #cosmos #space #spacetime #universe

[rizwanayubsaadi]

✓ Black Hole's Gravity

• The video portrays how a black hole's strong Gravity bends light reflected from Earth

Moreover,

- Why do black holes bend the light reflected from objects?

• Black holes bend light because of their incredibly strong gravitational pull.

• This bending of light is known as gravitational lensing.

• Just like a magnifying glass can bend light, a black hole's immense gravity warps spacetime, causing light rays to follow curved paths around it.

Furthermore,

• A black hole is a region in space where gravity is so strong that nothing, not even light, can escape from it.

• It forms when a massive star collapses under its own gravity at the end of its life.

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— Rizwan Ayub Saadi

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#rizwanayubsaadi #astronomy #astrophysics #physics #blackhole #earth #gravity #cosmos #deepspace #light #space #spacetime #universe

[rizwanayubsaadi]

✓ Latest News:

• NASA confirms 5,609 exoplanets in 4,167 systems as of April 16, 2024!

• The majority found by the Kepler telescope.

• More potential discoveries from Kepler and TESS missions.

• Stay tuned for cosmic updates!

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— Rizwan Ayub Saadi

— News Credit: NASA

— Image Credit: Martin Vargic

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#rizwanayubsaadi #astronomy #astrophysics #cosmos #physics #deepspace #Exoplanets #space #star #spacetime #universe

[rizwanayubsaadi]

✓ Latest images of Ringed planet by James Webb Space Telescope

• Webb first gazed at ringed planet in infrared view of Saturn, image taken on 25 June 2023, and published on 30 June 2023

• Saturn’s Rings Shine in Webb’s Observations of Ringed Planet (Unlabeled)

Webb took its first near-infrared look at Saturn on June 25.

•The planet appears extremely dark at this wavelength, as methane gas in its atmosphere absorbs sunlight, but its rings stay bright!

• This image was taken as part of a Webb science program designed to test the telescope’s capacity to detect faint moons around the planet and study its bright rings. Take a closer look here to find details within the planet's ring system, as well as the moons Dione, Enceladus, and Tethys. Saturn’s rings are made up of an array of rocky and icy fragments – the particles range in size from smaller than a grain of sand to a few as large as mountains on Earth.

— Rizwan Ayub Saadi

— Images Credit: NASA, ESA, CSA, STScI, Matt Tiscareno (SETI Institute), Matt Hedman (University of Idaho), Maryame El Moutamid (Cornell University), Mark Showalter (SETI Institute), Leigh Fletcher (University of Leicester), Heidi Hammel (AURA). Image processing: J. DePasquale (STScI)

Additionally,

Image description: The background is mostly dark. At the center is a dark orange-brown circle, surrounded by several blazing bright, thick, horizontal whiteish rings. This is Saturn and its rings. There are three tiny dots in the image—one to the upper left of the planet, one to the direct left of the planet, and the lower left of the planet. These are three of Saturn’s moons: Dione, Enceladus, and Tethys, respectively. There is a slightly darker tint at the northern and southern poles of the planet. The rings surrounding Saturn are mostly broad, with a few singular narrow gaps between the broader rings. There is an innermost, thicker ring, and next to that is a brighter, wider ring. Traveling farther outward, there is a small dark gap before another thicker ring. In the thicker ring, there is a narrow faint band. There is then an outermost, faintest, thinnest ring.

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#rizwanayubsaadi #ringedplanet #Saturn #JamesWebbSpaceTelescope #JamesWebb #space #spacetime #universe

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✓ ESO 378-1, the planetary nebula

• Let's zooming on into Bubble-shaped nebula known as ESO 378-1

• The nebula is also known as the Southern Owl Nebula

• And it is a planetary nebula located in the constellation Hydra.

• The nebula lies at a distance of 2,030 light years from Earth.

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— by Astrophysicist @rizwanayubsaadi

#rizwanayubsaadi #eso1781 #eso378 #southernowlnebula #nebulae #space #spacetime #universe

[rizwanayubsaadi]

— Europa, Jupiter's moon

• There might be more liquid water under the ice sheets of Europa (Jupiter's moon) than on earth

Additionally,

• Europa is slightly smaller than our moon, Luna.

• The composition of Europa: it is mainly made of silicate rock, and has a ice-crust and possibly an iron—nickel core.

• It is the sixth-largest moon in the Solar system, but the tiniest of the four Galilean moons revolving Jupiter.

• Europa is 628.3 million km away from our home planet, the Earth.

• Also, Europa's orbital period is 85 hours.

• It would take us about six-years to reach to Europa from Earth.

• Europa Clipper is an interplanetary, scheduled for launch in October 2024. The spacecraft is being improved to study the Galilean moon Europa through a series of flybys while orbiting around Jupiter.

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— By Astrophysicist @rizwanayubsaadi #astrophysicist

#rizwanayubsaadi #europa #Jupiter #spacetime #universe

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Mars

• The clearest image of Mars, ever taken!

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This is what falling into a Black Hole looks like!

—@rizwanayubsaadi #astrophysicist #pakistan

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The collision between two neutron stars — this collisions leads to an enormous gravitational waves!

—@rizwanayubsaadi #astrophysicist from #pakistan

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Andromeda galaxy in infrared view! Our neighbor galaxy, 2.5 million light-years away from Milky Way galaxy!

—@rizwanayubsaadi #astrophysicist from #pakistan

[rizwanayubsaadi]

The latest image of red planet, Mars!

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—@rizwanayubsaadi #astrophysicist

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The clearest image was ever taken of Venus!

Additionally,

• Venus is the second planet from the Sun and is Earth’s closest planetary neighbour. It’s one of the four inner, terrestrial (or rocky) planets, and it’s often called Earth’s twin because it’s similar in size and density. These are not identical twins, however – there are radical differences between the two worlds.

• It has a thick, toxic atmosphere filled with carbon dioxide and it’s perpetually shrouded in thick, yellowish clouds of sulfuric acid that trap heat, causing a runaway greenhouse effect.

• It’s the hottest planet in our solar system, even though Mercury is closer to the Sun.

• Surface temperatures on Venus are about 900 degrees Fahrenheit (475 degrees Celsius) – hot enough to melt lead.

• Venus has crushing air pressure at its surface – more than 90 times that of Earth – similar to the pressure you'd encounter a mile below the ocean on Earth.

Furthermore,

Distance from Sun: 108.2 million km

Orbital period: 225 days

Radius: 6,051.8 km

Length of day: 116d 18h 0m

Surface area: 460.2 million km²

Surface gravity: 8.87 m/s2; 0.904 g

—@rizwanayubsaadi #astrophysicist

#rizwanayubsaadi #venus #planets #spacetime #universe

[rizwanayubsaadi]

First Full-Color Image from the James Webb Space Telescope

Finally unveiled!!

• The first breathtaking image from the James Webb Space Telescope.

• This is the deepest, sharpest and highest-resolution view of the infrared Universe that we've ever taken.

• This first image from NASA’s James Webb Space Telescope is the deepest and sharpest infrared image of the distant universe to date.

• It is known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is spilling over with detail. Thousands of galaxies – encompassing the haziest objects ever discovered in the infrared – have appeared in Webb’s view for the first time.

— The rest of the full-colour images will be released tomorrow.

—@rizwanayubsaadi #astrophysicist from Pakistan

#rizwanayubsaadi #jameswebbspacetelescope #JamesWebb #jwt #spacetime #universe

[rizwanayubsaadi]

Latest images from Mars by perseverance rover

• Perseverance rover acquired these images by using its right-left navigation and right mast-Z cameras.

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—@rizwanayubsaadi #astrophysicist

#rizwanayubsaadi #Mars #perseverance #Rovers #PerseveranceRover #spacetime #universe