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The Daily Cosmos or Interesting Facts about the Universe

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The Daily Cosmos or Interesting Facts about the Universe

Cosmology
Astrophysics
Astronomy

Location: #science
Members: 58
Latest Activity: yesterday

 

Cosmology - Astrophysics - Astronomy

 

Hubble Wallpaper - Awesome Hubble Images

Discussion Forum

Big Bangers' Imaginations Supply Their Story's Only Support.

Started by Tom Sarbeck. Last reply by Joey Daniel Smith Dec 22, 2018. 7 Replies

'Hot Jupiter'

Started by Mrs.B. Last reply by Mrs.B Apr 9, 2016. 7 Replies

NASA's Solomon's Choice.

Started by Davy Oct 3, 2013. 0 Replies

This is Science at Work.

Started by Davy. Last reply by Davy Aug 15, 2013. 1 Reply

Comment Wall

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Comment by Mrs.B yesterday

Neat photos.

Comment by Stephen yesterday

Artifacts and Other Imaging Anomalies Taken by NASA’s Solar Imagers

But on occasion, the acrobatics of light that can produce some odd photographic effects. Here are some of the more common imaging anomalies and explanations for why they occur.
1. Bending
Coronagraphs are designed to image the Sun’s corona, or outer atmosphere — but occasionally, other astronomical objects sneak into the picture. When they do, they can produce some strange image artifacts.
In some cases, the artifact is due to the instrument itself getting in the way. For example, note the “butterfly” shape of Venus in the STEREO coronagraph (COR2) image below at the 10 o’clock position. That’s caused by diffraction, or bending, of Venus’s light off of the occulter stem — the strip of material, too out-of-focus to be seen in this image, that holds the dark disc in the center to block the bright Sun.   

2. Bleeding
In other cases, the astronomical objects are just too bright, saturating the instrument’s sensitive detectors and leaving vertical or horizontal streaks of light across the image.
For example, consider this video from the SOHO spacecraft, compiled from data taken Jan. 2-4, 2010. As a Sun-grazing comet streams across the sky, Venus is visible just to the lower right of the Sun. Notice how the planet’s light smears out to both sides — that’s the “bleeding” of the excess signal along the detector’s columns. Often the heads of bright comets will show the same aberration. (The attentive observer will notice Mars, a small dot of in the upper left, moving left to right).

3. Blooming
In a different scenario, NASA’s Solar Dynamics Observatory captured this X7 (major) solar flare erupting on Aug. 9, 2011, shown here in extreme ultraviolet light. The flare caused very bright saturation and “blooming” artifacts above and below the flare region, causing extended diffraction patterns to spread out in an “X” formation across the SDO imager

4. Banding
As a final example, we look at highly energetic particles that travel through space. Some of these, known as solar energetic particles, originate from the Sun, while others, known as galactic cosmic rays, come from outside the solar system. When they pass through the detectors, they can produce thin bright bands or streaks of light. This one was observed by a STEREO coronagraph.

Although they may seem pesky, these artifacts and anomalies are normal, expected results from properly functioning spacecraft. But they remind us that images, like any other form of data, don’t speak for themselves: what we see is a product both of nature and the instruments we use to observe it.

https://blogs.nasa.gov/sunspot/2019/02/08/artifacts-and-other-imagi...

Comment by Mrs.B on Friday

That it is.

Comment by Stephen on Friday

It's a magnificent achievement to have lasted that long.

Comment by Mrs.B on Friday

After that length of time, it most certainly doesn't owe them anything.

Comment by Stephen on Thursday

RIP Mars Opportunity Rover. Designed For 90 Days, It Lasted 14 Years

One of the most successful and enduring feats of interplanetary exploration, NASA’s Opportunity rover mission is at an end after almost 15 years exploring the surface of Mars and helping lay the groundwork for NASA’s return to the Red Planet.
The Opportunity rover stopped communicating with Earth when a severe Mars-wide dust storm blanketed its location in June 2018. After more than a thousand commands to restore contact, engineers in the Space Flight Operations Facility at NASA’s Jet Propulsion Laboratory (JPL) made their last attempt to revive Opportunity Tuesday, to no avail. The solar-powered rover’s final communication was received June 10.
Designed to last just 90 Martian days and travel 1,100 yards (1,000 meters), Opportunity vastly surpassed all expectations in its endurance, scientific value and longevity. In addition to exceeding its life expectancy by 60 times, the rover traveled more than 28 miles (45 kilometers) by the time it reached its most appropriate final resting spot on Mars – Perseverance Valley.

Read more=.  https://twistedsifter.com/2019/02/mars-opportunity-rover-tribute-ga...

Comment by Stephen on February 12, 2019 at 6:27pm

NASA Finds Second Massive Greenland Crater

Comment by Stephen on February 10, 2019 at 10:02am

NASA Shows Alien World Is Flat

By Scott Manley

Comment by Stephen on February 10, 2019 at 12:15am

NASA: Join Us in Going to the Moon ... and Beyond

Humans are preparing to leave Earth’s orbit for the first time since 1972 — to the moon and eventually to Mars and beyond. That’s the mandate we’ve been given by President Donald Trump and a supportive bipartisan Congress. This is an exciting time to be leading America’s space program.
Today I’m proud to share a bold response to President Trump’s December 2017 call to action, one that will usher in the next chapter of human exploration. We are calling on American companies to help design and develop human lunar landers, reusable systems for astronauts to land on the moon.
As a lifelong NASA supporter, I am thrilled to be talking once again about landing humans on the moon. But to some, saying we’re returning to the moon implies we’ll be doing the same as we did 50 years ago. I want to be clear — that is not our vision. We are going to the moon with innovative new technologies and systems to explore more locations across the surface than we ever thought possible. This time, when we go to the moon, we will stay.

In the half-century since we last set foot on the lunar surface, our country, our agency — including its budget and workforce — and the technology and industrial landscape have all experienced tremendous change.

Indeed, more than two-thirds of Americans today were not even alive to witness the six successful Apollo moon landings, myself included. Extraordinary as they were, for many the lunar expeditions are facts from history books or stories told by older relatives. But unlike Apollo, this time we’re going to the moon to stay, and from there we’ll take the next giant leap in deep space exploration.
In my youth, I aspired to emulate America’s best aviators, astronauts like Alan Sheppard, John Glenn and Neil Armstrong. My aspirations led me to become a pilot in the U.S. Navy. Now, as NASA’s administrator, I have the opportunity to support a new generation of America’s best pilots, operators and space explorers as we venture deeper into the universe than ever before. I am humbled to lead this journey. I’m excited about what it means for our future, and I believe it is essential to the security of our nation.
To do that we need a sustainable, human presence beyond Earth’s orbit. That starts with the Gateway — a lunar orbiting outpost designed to ensure the safe transit of astronauts to the lunar surface and back home again.
The Gateway will be the home base for the first reusable human lunar lander system. It’s a sustainable approach that creates more commercial opportunities, which is necessary for long-term human space exploration. Crews will use our powerful Space Launch System (SLS) rocket and Orion spacecraft to travel to the Gateway and return safely home.
We want to get started as quickly as possible, so we are inviting private industry and other potential partners to meet with us next week at NASA Headquarters to discuss human lunar landers.

We have already committed to working with nine American companies to send new science instruments and technology demonstrations to the surface on commercial cargo moon deliveries. Following these early 
https://www.ozy.com/opinion/nasa-join-us-in-going-to-the-moon-and-b...

Comment by Mrs.B on February 10, 2019 at 12:00am

Fantastic photo.

 
 
 

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