Tuesday, November 30, 2021
Light Pillar over Volcanic Etna
What happening above
that volcano? Something very unusual — a volcanic light pillar. More typically, light pillars are caused by sunlight and so appear as
a bright column that extends upward above a rising or setting Sun. Alternatively, other light pillars — some quite colorful — have been recorded above street and house lights. This light pillar, though, was illuminated by the red light emitted by the glowing magma
of an erupting volcano. The volcano is Italy‘s Mount Etna, and the featured image was captured with a single
shot a few hours after sunset in
mid-June. Freezing temperatures above the volcano’s ash cloud created ice-crystals either in cirrus clouds high above the volcano — or in condensed water vapor expelled by Mount Etna. These ice crystals — mostly flat toward the ground but fluttering — then reflected away light from the volcano’s caldera.
Image & info via APOD
Image Credit &
Copyright: Giancarlo Tinè
Source: Light
Pillar over Volcanic Etna – Scents of Science (myfusimotors.com)
Short Film - Frimas (2021) - Drama
Storyline:
In the near future, when getting an abortion has once
again become a criminal offense, Kara is confronted by a grim and brutal
reality. Even though obvious dangers are at play, she seeks out the services of
an illegal mobile abortion clinic. Once inside the meanders of this morbid
clinic, she is confronted with the consequences of her painful decision. Not
only are her life and freedom in danger, but Kara is unprepared to face the
emotional repercussions that her decision will have on her and those around her.
Director: Marianne Farley
Writer: Marianne Farley
Monday, November 29, 2021
Black Hole Collision May Have Exploded With Light - UNIVERSE
This artist's concept shows a supermassive black hole
surrounded by a disk of gas. Embedded in this disk are two smaller black holes
that may have merged together to form a new black hole.
When two black holes spiral around each other and
ultimately collide, they send out gravitational waves - ripples in space and
time that can be detected with extremely sensitive instruments on Earth. Since
black holes and black hole mergers are completely dark, these events are
invisible to telescopes and other light-detecting instruments used by
astronomers. However, theorists have come up with ideas about how a black hole merger
could produce a light signal by causing nearby material to radiate.
Now, scientists using Caltech's Zwicky Transient
Facility (ZTF) located at Palomar Observatory near San Diego may have spotted
what could be just such a scenario. If confirmed, it would be the first known
light flare from a pair of colliding black holes.
The merger was identified on May 21, 2019, by two
gravitational wave detectors – the National Science Foundation's Laser
Interferometer Gravitational-wave Observatory, or LIGO, and the European
Virgo detector – in an event called GW190521g. That detection allowed the
ZTF scientists to look for light signals from the location where the
gravitational wave signal originated. These gravitational wave detectors have
also spotted mergers between dense cosmic objects called neutron stars, and
astronomers have identified light emissions from those collisions.
Learn more: What Is a Black Hole?
Black Hole Image Makes History; NASA Telescopes
Coordinated Observations
Image
Credit: Caltech/R. Hurt (IPAC)
Source: https://www.nasa.gov/image-feature/black-hole-collision-may-have-exploded-with-light
Short Film - The Shipment (2018) - Drama - Sci-Fi
Storyline:
An ex-slave trader struggles to live a reformed life
as a lowly interplanetary cargo hauler. Stranded and broke, he faces his dark
past and difficult ethical choices in a desperate attempt to provide a better
life for his daughter.
Director: Bobby Bala
Writer: Bobby Bala(story)
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