Text on screen: What is a neutron star?
When a star bigger
and more massive than the sun
runs out of fuel at the end of its life,
its core collapses while the outer
layers are blown off in a
supernova explosion
What's left behind
depends on the star's original mass.
A star roughly 10 to
20 times our sun
leaves behind a neutron star.
A more massive star
becomes a black hole.
Unlike black holes, neutron stars
are directly observable, usually
as pulsars - the lighthouses of the
cosmos. Discovered
50 years ago, they are the
densest observable objects in the
universe.
Neutron stars compress up
to twice the sun's mass into a
city-sized sphere. Matter is
packed so tightly that a teaspoon
of neutron star interior
would weigh more than a billion tons
on Earth.
Still, the nature of the ultra-dense matter
in the cores of neutron stars
is unknown.
Because neutron stars
pack so much mass into such a
tiny volume, they produce
gravity strong enough to bend the light they emit,
distorting their appearance in
a way that enables the mass
and size of the star to be measured.
Scientists cannot
reproduce the extreme conditions
in and around neutron stars on
Earth. They must look
into the galaxy to answer decades-old
questions about extreme matter and
gravity.
NASA's Neutron star Interior
Composition Explorer mission,
or NICER, will make X-ray
observations of neutron stars from its
perch on the International Space Station.
It will give astronomers more
insight into these mysterious
objects - helping determine
what is under their surface.
A multipurpose
mission, NICER includes a
technology demonstration called SEXTANT.
It will analyze NICER's
observations to validate the use of
rapidly rotating neutron stars
as navigation beacons, for travel
in deep space, throughout the solar
system and beyond.
Text on screen: nasa.gov/nicer
For more infomation >> What is a Neutron Star? Investigate Unusual Objects - Duration: 2:17.-------------------------------------------
🔷 Blake Shelton Is a Cheating, Lying Bastard!💯Miranda Lambert's Ex - Duration: 3:51.
Recently, Blake Shelton shaded ex Miranda Lambert on Twitter with an unkind subtweet,
seeming to gloat over the "karma" of Miranda being accused of homewrecking.
Well Blake isn't Miranda's only ex.
Jeff Allen, whom she dated for years before she ever met Blake, is blasting him for hypocrisy
... and accusing him of also being a cheater.
He's since deleted the tweet, but you have to read his impassioned words.
Blake Shelton's tweet, which got the ball rolling, reads:
"Been taking the high road for a long time..."
By which he means that he hasn't spoken as much as he could have about how things ended
between him and Miranda.
"I almost gave up."
Now he starts his bit.
"But I can finally see something on the horizon up there!!"
He's referring to the accusations that Miranda Lambert stole her new boyfriend from his wife
.
"Wait!!
Could it be?!
Yep!!
It's karma!!"
Oh boy.
Jeff Allen tweeted, writing words that he must have been sitting on for years and years.
"You know, I've always given you the benefit of the doubt and chalked it up to just being
human."
You can feel his anger in the now-deleted tweet.
"But you must be one arrogant SOB to pop off something like this."
And here comes the accusation:
"When I know damn good and well you were cheating on your wife and Miranda was cheating on me
when you two started up."
Jeff Allen dated Miranda Lambert for about three years before they broke up and she dated
-- and later married -- Blake Shelton.
Allen has since deleted that tweet, but he did tweet this:
"I kept my mouth shut for 13 years."
That's a long time to hold onto something like this.
But he, if you can imagine, apologizes for his tweet.
"Sorry, his karma tweet rubbed me wrong."
As well it should have.
It certainly looked like hypocritical gloating.
"All of this is pointless."
If you believe all of the accusations, Miranda Lambert cheated on Jeff Allen with Blake Shelton,
who was also cheating.
Then, Blake Shelton and Miranda Lambert allegedly both cheated on each other, though the Country
community seemed to side with Blake .
Then, Blake and Gwen Stefani bonded over both having been cheated on.
At the time, they were both judges or coaches or whatever on The Voice .
Since then, Miranda spent over two years with Anderson East .
But now, she's accused of "stealing" Evan Felker from his wife.
And yes, Miranda has been called out on social media by a very unhappy Mrs. Felker.
All of that alleged cheating is in the past, but that doesn't mean that it's going to be
smooth sailing for Gwen and Blake from here on out.
Gwen Stefani has only had a few serious relationships in her life.
She takes cheating very seriously.
Is she going to kick Blake to the curb when she realizes that he's a huge hypocrite who
used her heartbreak to bond with her?
Or is she so besotted that she's going to keep going and perhaps even marry Blake ... and
only break things off if and when he cheats on her?
No one deserves that kind of heartbreak.
It may be that Miranda Lambert is, as some accuse her of being, a "serial cheater."
But she certainly has not stolen anyone's husband.
Those men, if the allegations are true, have made their own choices.
And Blake was one of those men.
It sounds like Jeff Allen was totally justified in tweeting what he wrote.
29 Stars Who Are Known Cheaters
Start Gallery
-------------------------------------------
Blue Origin highest test flight - Selfies from space? How is it different to SpaceX? - Duration: 7:08.
Jeff Bezos's space tourism company just had a massively successful launch and landing
of both its reusable rocket and its passenger-carrying capsule.
Despite a delayed start due to thunderstorms, Blue Origin successfully launched its reusable
rocket, New Shepard.
Not only did the rocket lift off and launch, but the passenger carrying capsule also landed
safely on the ground.
Blue Origin, owned by Amazon CEO Jeff Bezos, launched the New Shepard suborbital capsule
from its launch pad in Texas.
This particular launch marked the eighth of its kind for the New Shepard rocket.
The ultimate goal for Blue Origin was to bring tourists close to space and become the leader
of the private space industry as it grows and evolves.
In this video, Engineering Today will discuss about Blue Origin First Reusable Space Tourism
Rocket.
What is it?
How does it work?
Should the passenger-carrying capsule compete with United Launch Alliance's upcoming Vulcan
rocket and with SpaceX boosters in the U.S. launch market?
Lets get started.
Blue Origin, boosting a suite of microgravity experiments and an instrumented dummy astronaut
known as Mannequin Skywalker to the edge of space in the company's eighth test flight.
Designed to carry up to six "space tourists" to altitudes above 62 miles, the widely recognized
threshold of space, the unmanned New Shepard capsule separated from its booster, as planned,
at an altitude of about 47 miles, before soaring on its own to a height of 351,000 feet, or
66.5 miles.
That's nearly 20,000 feet higher than the normally targeted altitude in a bid to "expand
the envelope" and gather additional flight data.
As it arced over to begin the long fall back to Earth, the capsule experienced four to
five minutes of weightlessness before plunging back into the dense lower atmosphere, subjecting
the spacecraft to heavy deceleration and about four times the normal force of gravity.
Perched atop a reusable booster powered by a single hydrogen-fueled BE-3 engine, the
New Shepard spacecraft blasted off from the company's Van Horn, Texas, test facility and
smoothly climbed away, generating 110,000 pounds of thrust and trailing a brilliant
jet of flame.
The booster, making its second flight, dropped back toward the launch site tail first, re-igniting
the BE-3 engine and deploying four landing legs before settling to a landing on a concrete
pad near the launch site about eight minutes after takeoff.
The New Shepard capsule, also making its second flight, completed a more leisurely descent,
slowly falling under three large parachutes before settling to a rocket-assisted touchdown
near the launch pad about 11 minutes after launch.
It was Blue Origin's eighth New Shepard flight overall and it's seventh successful booster
flight in a row.
It was the company's first test flight since Dec. 12.
The spacecraft features a powerful, already-tested abort system that can quickly push the capsule
away from a malfunctioning booster and six large windows, each measuring nearly four
feet tall and two-and-a-half feet wide that Blue Origin says will provide customers with
spectacular panoramic views.
For last flight, the New Shepard capsule was loaded with a variety of experiments, including
instrumentation provided by NASA to measure pressure, acoustics, acceleration and other
factors, along with components that will be used aboard the agency's Orion deep space
capsule.
Other research focused on microgravity gene expression, basic physics and tests of technology
designed to demonstrate the feasibility of wi-fi delivery to spacecraft.
These experiments included tests regarding life-support technologies that would be used
in space missions.
It was the second flight for Mannequin Skywalker, a dummy astronaut equipped with instrumentation
to measure the effects of the flight on an actual crew member.
"He is a little sensitive about being called a 'dummy,' as he conducts astronaut telemetry
and science studies.
Blue Origin is developing the reusable New Shepard rocket and spacecraft to carry up
to six space tourists, researchers and experiments on brief suborbital flights, with piloted
test flights presumably starting later this year.
Along with the suborbital New Shepard rockets and spacecraft, Blue Origin also is developing
a powerful new engine, the BE-4, to help boost satellites into orbit using much larger New
Glenn rockets.
Blue Origin has built a sprawling rocket factory near the Kennedy Space Center in Florida to
manufacture New Glenn boosters and is developing a launch pad at the nearby Cape Canaveral
Air Force Station.
The New Glenn will compete with United Launch Alliance's upcoming Vulcan rocket and with
SpaceX boosters in the U.S. launch market.
In the suborbital space tourism arena, Blue Origin will be competing with Virgin Galactic,
a company owned by Virgin-founder Richard Bransom that is developing a rocket-powered
spaceplane to carry tourists on suborbital flights to the edge of space.
Though, neither company has announced when they plan to launch the first private citizens.
let's hope for the best.
-------------------------------------------
Everyday is Valentine's Day: Olga & Mohammad - Duration: 8:36.
For more infomation >> Everyday is Valentine's Day: Olga & Mohammad - Duration: 8:36. -------------------------------------------
New iPhone to kill 3D Touch, and this is why that's a good thing - Duration: 3:28.
New iPhone to kill 3D Touch, and this is why that's a good thing Apple. Apple iPhone screens can currently crack quite easily, even in the case of the latest iPhone X. That could be about to change. Apple is allegedly working on a new way to make its iPhone display glass tougher, but at the cost of 3D Touch.
According to reliable KGI Securities analyst Ming-Chi Kuo, Apple is working on a new screen tech that uses a Cover Glass Sensor (CGS) process to make it both stronger and lighter. The CGS tech means that the touch sensor, currently found deeper in the screen, will be moved to the surface of the display.
By separating the touch sensor and the screen in this way Apple will be able to cut down on weight and the chance of damage. This all comes at the cost of 3D Touch.
Since the CGS tech will increase the production cost for Apple, it should mean losing 3D Touch. This is likely a result of the production process too, not just price. Kuo states that Apple will begin to phase out 3D Touch this year with its new affordable iPhone.
This will allegedly feature an LCD display and work with the new CGS tech, so it should be Apple's first tougher phone, yet will still have a lower price tag. The new iPhone X and larger iPhone X Plus, expected this year, will still feature OLED displays so they won't yet get the CGS treatment. The next generation of iPhone X, in 2019, should see the new screen tech and the end of 3D Touch completely.
The 3D Touch tech, found in iPhones since the iPhone 6S in 2015, is a pressure sensitive feature that allows the devices to detect varying levels of pressure exerted on the screen by a finger. The result is a more complex set of control options based on hard and soft presses of the same icon, for example.
Apple's 3D Touch was added to its iPhones but not iPads, suggesting the company has been moving tentatively with the tech, rather than committing completely.
Since Apple didn't commit, and many users didn't even know 3D Touch existed, developers didn't make use of it widely either. As a result 3D Touch has never reached its potential – and now it looks like it never will.
Expect Apple to unveil its new affordable $550 iPhone with large 6.3-inch screen later this summer, if rumours prove accurate.
-------------------------------------------
Double pump is back ? - Duration: 4:19.
Double pump no audio sorry
Không có nhận xét nào:
Đăng nhận xét