Asteroid Samples Suggest Origin of Life on Earth May Have Come Via Impact
Video Credit: Wibbitz Top Stories - Duration: 01:31s - Published
Asteroid Samples Suggest Origin of Life on Earth May Have Come Via Impact
Asteroid Samples Suggest , Origin of Life on Earth , May Have Come Via Impact.
Scientists have now confirmed that
samples taken from the asteroid
Ryugu contain organic molecules.
.
Gizmodo reports that the revelation adds credence to
the theory that the origin of life on Earth could have
been delivered via meteorite and asteroid impacts.
Ryugu is a rocky remnant leftover
from the formation of our solar system
over 4 billion years ago.
.
The primitive carbonaceous asteroid was visited
by Japan's Hayabusa2 mission, which gathered
samples from the surface back in 2019.
The mission has provided scientists with
a fascinating window looking into what
the solar system was like in its infancy.
Among other compounds, scientists found
15 different amino acids, amines and
aromatic hydrocarbons in the samples.
.
The presence of prebiotic molecules on
the asteroid surface despite its harsh
environment caused by solar heating
and ultraviolet irradiation, as well as
cosmic-ray irradiation under high-vacuum
conditions, suggests that the uppermost
surface grains of Ryugu have the potential
to protect organic molecules, Hiroshi Naraoka, Planetary scientist at Kyushu University
in Japan and the paper’s lead author, via 'Gizmodo'.
The presence of prebiotic molecules on
the asteroid surface despite its harsh
environment caused by solar heating
and ultraviolet irradiation, as well as
cosmic-ray irradiation under high-vacuum
conditions, suggests that the uppermost
surface grains of Ryugu have the potential
to protect organic molecules, Hiroshi Naraoka, Planetary scientist at Kyushu University
in Japan and the paper’s lead author, via 'Gizmodo'.
These molecules can be transported throughout the solar system, potentially dispersing as interplanetary dust particles after being ejected from the uppermost layer of the asteroid by impacts or other causes, Hiroshi Naraoka, Planetary scientist at Kyushu University
in Japan and the paper’s lead author, via 'Gizmodo'.
The team's findings were
published in 'Science.'.
Gizmodo reports that NASA's OSIRIS-REx mission
is currently returning from an asteroid known as Bennu,
where it completed similar sampling operations
Astronomers Say , Neutron Jet Emissions , Travel at Relativistic Speeds.
Gizmodo reports that new research suggests that
the dense remains of massive stars propel jets of gas and
dust at speeds of hundreds of millions of miles per hour.
Neutron stars are the stellar remains of
some of the densest objects in the universe. .
According to new research, neutron star jets
can travel up to 70,836 miles per hour,
just over one-third the speed of light. .
Relativistic effects like time dilation and length
contraction are believed to occur at speeds
exceeding just one-tenth the speed of light. .
James Miller Jones, , an astrophysicist at Curtin University in
Australia and co-author of the research, .
notes that neutron stars are, "so dense that they can pull material off
the surface of a nearby companion star.".
That gas spirals down onto the surface
of that neutron star where it gets very,
very hot and dense. Once enough of it
builds up nuclear fusion reactions
start to happen on the surface, James Miller Jones, astrophysicist at Curtin University
in Australia and co-author, via 'Gizmodo'.
Using the Australia Telescope Compact Array and the
International Gamma-Ray Astrophysics Laboratory, researchers found that thermonuclear explosions on
distant stars kickstart these high-speed jet emissions. .
When these explosions occurred, they generated
high-speed jets and bright X-rays which made
it possible for researchers to measure speeds. .
The findings suggest that the staggering
speed of these emissions is close to escape
speed, or the needed velocity for material to
escape the neutron star's gravitational speed. .
Gizmodo reports that the team's results will inform
future models of jet formation and could help reveal
some of the most extreme physics in the universe.
Credit: Wibbitz Top Stories Duration: 01:30Published
AT&T Confirms Data Breach , Affected 73 Million Customers.
73 million current and former
AT&T customers have had their sensitive
data compromised in a hack that some outlets
say dates back to 2021, Gizmodo reports.
The data, which includes social security numbers, email addresses, birthdates, phone numbers and AT&T account information, .
was located two weeks ago in a data
set released on the dark web.
It's not clear if it was AT&T's systems that were breached or if the information was stolen from one of the company's vendors.
Currently, AT&T does not have evidence
of unauthorized access to its systems
resulting in exfiltration of the data set, AT&T, via statement.
The company is communicating
proactively with those impacted and
will be offering credit monitoring at
our expense where applicable, AT&T, via statement.
As a precaution, AT&T has reset the
passcodes of its current customers. .
The company will be reaching out to customers whose information has been compromised. .
AT&T advises those who are worried about their accounts to monitor activity and credit reports.
Credit: Wibbitz Top Stories Duration: 01:30Published
The Reason Why, Insects Are Attracted , to Artificial Light.
Gizmodo reports that
researchers believe they finally know
why insects seem to be drawn to lights.
New data suggests that bugs
are not attracted to the light,
as is commonly believed.
Rather, researchers now believe that
based on insects' use of light sources to
orient flight, artificial lights disorient bugs.
The team's findings were published
in the journal 'Nature Communications.'.
This has been a prehistorical
question. In the earliest writings,
people were noticing this around fire. , Jamie Theobald, Biologist at Florida International
University and co-author of the study, via Gizmodo.
It turns out all our
speculations about why it
happens have been wrong, Jamie Theobald, Biologist at Florida International
University and co-author of the study, via Gizmodo.
Researchers note that insects'
"seemingly erratic" flying patterns
are really their failed attempts
to understand the artificial light. .
Rather than steering toward the light, bugs were
seen turning their dorsum, or their backs,
toward the light, attempting to steer by it.
Under natural sky light, tilting
the dorsum towards the brightest
visual hemisphere helps maintain
proper flight attitude and control, Study authors, via Gizmodo.
Near artificial sources,
however, this highly conserved
dorsal-light-response can produce
continuous steering around
the light and trap an insect, Study authors, via Gizmodo
Credit: Wibbitz Top Stories Duration: 01:31Published
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