# orderedItems[].object.content
Light transits 3 dichronic filters in series (D1-D3), each of which reflects a narrow band of the spectrum and transmits the rest. The reflected light from the 3 filters and the transmitted light from the last filter are sent via 4 IFUs and 4 gratings (G1-G4) to detectors.

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# orderedItems[].object.contentMap.en
Light transits 3 dichronic filters in series (D1-D3), each of which reflects a narrow band of the spectrum and transmits the rest. The reflected light from the 3 filters and the transmitted light from the last filter are sent via 4 IFUs and 4 gratings (G1-G4) to detectors.

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# orderedItems[].object.content
The #JWST MIRI MRS can simultaneously generate IR spectra for all points in a rectangular sub-area within its field of view. It uses 4 Integral Field Units (IFUs) and 3 sets of dichronic filters and diffraction gratings to provide spectroscopy measurements over the full 4.9–28.5 μm spectrum.

The science behind the IFU is described here https://twitter.com/akaschs/status/158 3543778400301056

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# orderedItems[].object.contentMap.en
The #JWST MIRI MRS can simultaneously generate IR spectra for all points in a rectangular sub-area within its field of view. It uses 4 Integral Field Units (IFUs) and 3 sets of dichronic filters and diffraction gratings to provide spectroscopy measurements over the full 4.9–28.5 μm spectrum.

The science behind the IFU is described here https://twitter.com/akaschs/status/158 3543778400301056

2/n

# orderedItems[].object.content
The #JWST #MIRI Medium Resolution Spectroscopy (MRS) is returning to science observations, after a 2.5-month hiatus. The friction issue identified around Aug 24 with one of the grating wheels has been diagnosed and a new set of operational procedures will allow its use for certain observations, with return to full use in the near future.
https://www. stsci.edu/contents/news/jwst/2 022/miri-medium-resolution-spectroscopy-is-returning-to-science-observations

The images below show the 2 filter/grating wheel assemblies. More on the MRS in the thread below.

1/n

# orderedItems[].object.contentMap.en
The #JWST #MIRI Medium Resolution Spectroscopy (MRS) is returning to science observations, after a 2.5-month hiatus. The friction issue identified around Aug 24 with one of the grating wheels has been diagnosed and a new set of operational procedures will allow its use for certain observations, with return to full use in the near future.
https://www. stsci.edu/contents/news/jwst/2 022/miri-medium-resolution-spectroscopy-is-returning-to-science-observations

The images below show the 2 filter/grating wheel assemblies. More on the MRS in the thread below.

1/n

# orderedItems[].object.content
Did you catch the lunar eclipse last night?

This visualization shows what it would have looked like if you were observing earth from the moon.

"A red ring, the sum of all Earth’s sunrises and sunsets, lines the Earth’s limb and casts a ruddy light on the lunar landscape. With the darkness of the eclipse, the stars come out." - https://svs.gsfc.nasa.gov/4157

https://www. youtube.com/watch?v=mbT50-rppa U

# orderedItems[].object.contentMap.en
Did you catch the lunar eclipse last night?

This visualization shows what it would have looked like if you were observing earth from the moon.

"A red ring, the sum of all Earth’s sunrises and sunsets, lines the Earth’s limb and casts a ruddy light on the lunar landscape. With the darkness of the eclipse, the stars come out." - https://svs.gsfc.nasa.gov/4157

https://www. youtube.com/watch?v=mbT50-rppa U

# orderedItems[].object.content
Selection bias partially responsible?

Hopefully it will stay that way - calmer, more open, constructive.

But we also have to reach out to the billions on Twitter and influence them with truth and understanding.

# orderedItems[].object.contentMap.en
Selection bias partially responsible?

Hopefully it will stay that way - calmer, more open, constructive.

But we also have to reach out to the billions on Twitter and influence them with truth and understanding.

# orderedItems[].object.content
As scientists at #NASA and elsewhere have always said - "Extraordinary claims require extraordinary evidence".

There is plenty of data that has been and is being collected on #Mars, that hint at past/present microbial life, but non-biological explanations cannot be ruled out.

“The instrumentation required to definitively prove microbial life once existed on Mars is too large and complex to bring to Mars", hence the Mars Sample Return mission.

https://mars.nasa.gov/news/8863/search ing-for-life-in-nasas-perseverance-mars-samples/

# orderedItems[].object.contentMap.en
As scientists at #NASA and elsewhere have always said - "Extraordinary claims require extraordinary evidence".

There is plenty of data that has been and is being collected on #Mars, that hint at past/present microbial life, but non-biological explanations cannot be ruled out.

“The instrumentation required to definitively prove microbial life once existed on Mars is too large and complex to bring to Mars", hence the Mars Sample Return mission.

https://mars.nasa.gov/news/8863/search ing-for-life-in-nasas-perseverance-mars-samples/

# orderedItems[].object.content
Here are a few scenes from Jezero Crater, #Mars, taken by #PerseveranceRover on Nov 6, 2022.
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# orderedItems[].object.contentMap.en
Here are a few scenes from Jezero Crater, #Mars, taken by #PerseveranceRover on Nov 6, 2022.
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# orderedItems[].object.attachment[].name
Scenes from Jezero Crater, taken by Mars Rover Perseverance on Nov 6, 2022.
https://mars.nasa.gov/mars2020/multimedia/raw-images/

# orderedItems[].object.content
By all means please do.
You might find some additional relevant hashtags and interesting people to connect with under #introduction at https://fosstodon.org/web/tags/introdu ction

# orderedItems[].object.contentMap.en
By all means please do.
You might find some additional relevant hashtags and interesting people to connect with under #introduction at https://fosstodon.org/web/tags/introdu ction

# orderedItems[].object.content
#Mars Rover Perseverance heading North towards Yori Pass to explore more of the river delta area in Jezero Crater, looking for rocks and signs of ancient microbial life.

It is expected to drop off some rock samples in the Three Forks area, as a backup, in case Percy is not able to deliver samples to the future Mars Sample Return mission.
1/n

# orderedItems[].object.contentMap.en
#Mars Rover Perseverance heading North towards Yori Pass to explore more of the river delta area in Jezero Crater, looking for rocks and signs of ancient microbial life.

It is expected to drop off some rock samples in the Three Forks area, as a backup, in case Percy is not able to deliver samples to the future Mars Sample Return mission.
1/n

# orderedItems[].object.attachment[].name
Map of Jezero Crater on Mars and the path of Mars Rover Perseverance.
https://mars.nasa.gov/mars2020/mission/where-is-the-rover/

# orderedItems[].object.content
Short #introduction - my area of research is Satellite based communications. Industry-based, not SpaceX.
I also follow space missions and astronomy.
I like to teach and write about -
#science #scicomm
#satellites #communications #InternetProtocols
#space #astronomy
#JWST #Hubble #HST
#mars #PerseveranceRover
#Artemis
#NASA #ESA
#Climate #Democracy #HumanRights

# orderedItems[].object.contentMap.en
Short #introduction - my area of research is Satellite based communications. Industry-based, not SpaceX.
I also follow space missions and astronomy.
I like to teach and write about -
#science #scicomm
#satellites #communications #InternetProtocols
#space #astronomy
#JWST #Hubble #HST
#mars #PerseveranceRover
#Artemis
#NASA #ESA
#Climate #Democracy #HumanRights

# orderedItems[].object.content
"Dutch residents are the most physically active on earth, getting 12.8 hours of exercise each week. The key—designing activity into daily life. The average #Dutch person cycles about 1,098 kilometers per year."

How many hours of exercise per week or bicycle km per year do you get?

@markmccaughrean
@BrentToderian
https://mastodon.online/@BrentToderian/109294930790891544

# orderedItems[].object.contentMap.en
"Dutch residents are the most physically active on earth, getting 12.8 hours of exercise each week. The key—designing activity into daily life. The average #Dutch person cycles about 1,098 kilometers per year."

How many hours of exercise per week or bicycle km per year do you get?

@markmccaughrean
@BrentToderian
https://mastodon.online/@BrentToderian/109294930790891544

# orderedItems[].object.content
Catch Me If You Can mission profile.
Webcast starts at T-20 minutes at https://rocketlabusa.com/live-stream
@RocketLab
2/n

# orderedItems[].object.contentMap.en
Catch Me If You Can mission profile.
Webcast starts at T-20 minutes at https://rocketlabusa.com/live-stream
@RocketLab
2/n

# orderedItems[].object.content
@RocketLab launch today of mission “Catch Me If You Can” from New Zealand’s Mahia Peninsula.
Payload: Science research satellite for Sweden, sun-sync orbit, 585 km alt
Launch time: 13:15-14:30 EDT
Recovery: Booster capture by Sikorsky S-92 helicopter!
https://twitter.com/RocketLab/status/1 588382484768509954
1/n

# orderedItems[].object.contentMap.en
@RocketLab launch today of mission “Catch Me If You Can” from New Zealand’s Mahia Peninsula.
Payload: Science research satellite for Sweden, sun-sync orbit, 585 km alt
Launch time: 13:15-14:30 EDT
Recovery: Booster capture by Sikorsky S-92 helicopter!
https://twitter.com/RocketLab/status/1 588382484768509954
1/n

# orderedItems[].object.content
The #CAPSTONE (Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment) spacecraft has successfully performed TCM-4. It is now less than 2 weeks away from arrival at the moon.
https://twitter.com/AdvancedSpace/stat us/1587165055346319361

# orderedItems[].object.contentMap.en
The #CAPSTONE (Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment) spacecraft has successfully performed TCM-4. It is now less than 2 weeks away from arrival at the moon.
https://twitter.com/AdvancedSpace/stat us/1587165055346319361

# orderedItems[].object.attachment[].name
Approximate trajectory and timeline of the CAPSTONE mission.
Source of original graphic - https://advancedspace.com/missions/capstone/

# orderedItems[].object.content
@markmccaughrean
Thanks for addressing this subject.
I picked fosstodon.org ... for some reason. Perhaps a wrong choice.

# orderedItems[].object.contentMap.en
@markmccaughrean
Thanks for addressing this subject.
I picked fosstodon.org ... for some reason. Perhaps a wrong choice.

# orderedItems[].object.content
Happy #Halloween.
These are spooks hiding in the Pillars of Creation in the Eagle Nebula, imaged by the #JWST MIRI instrument.
🎃💀👻😱
3/n

# orderedItems[].object.contentMap.en
Happy #Halloween.
These are spooks hiding in the Pillars of Creation in the Eagle Nebula, imaged by the #JWST MIRI instrument.
🎃💀👻😱
3/n

# orderedItems[].object.content
The Pillars of Creation, vast as they are at 15 light years tall, they are but a mere speck in the vastness of our galaxy, which itself is a mere speck in the vastness of the visible Universe.
Credit: NASA, ESA, CSA, STScI, ESO
#JWST

# orderedItems[].object.contentMap.en
The Pillars of Creation, vast as they are at 15 light years tall, they are but a mere speck in the vastness of our galaxy, which itself is a mere speck in the vastness of the visible Universe.
Credit: NASA, ESA, CSA, STScI, ESO
#JWST

# orderedItems[].object.content
The "Pillars of Creation" as imaged by the #JWST and Hubble.
In the new image by #JWST MIRI (top left) at 7.7, 11.3 and 15 μm IR wavelengths, dust dominates the image along with a few dust-enshrouded stars. More stars shine in the near-IR wavelengths.

# orderedItems[].object.contentMap.en
The "Pillars of Creation" as imaged by the #JWST and Hubble.
In the new image by #JWST MIRI (top left) at 7.7, 11.3 and 15 μm IR wavelengths, dust dominates the image along with a few dust-enshrouded stars. More stars shine in the near-IR wavelengths.