Recent comments in /f/space

Caffeine_and_Alcohol t1_j9921q3 wrote

Reply to comment by HappyMaskSalesPerson in The Tadpole galaxy by Hubble, Its eye-catching tail is about 280,000 light-years long. Also known as UGC 10214 and Arp 188, it is a disrupted barred spiral galaxy located 420 million light-years from Earth in the northern constellation Draco. Credit Image: NASA/ESA/HST/STScI. by Davicho77

Curious, how come we arnt seeing photos from the new satellite we put up last year?

−12

RollinThundaga t1_j990ccl wrote

Reply to comment by marketrent in ‘We found the Artemis-I noise level at 5 km had a crackling quality about 40 million times greater than a bowl of Rice Krispies.’ — Maximum noise measured during Artemis-I launch on 16 Nov. 2022 was higher than predicted by marketrent

For general reference; a 10 decibal increase in sound intensity is an apparent doubling of the loudness.

130 decibels is the human pain threshold. A lawn mower is around 90 decibels. A normal conversation is about 60 decibels.

6

Decronym t1_j98tbns wrote

Reply to The Tadpole galaxy by Hubble, Its eye-catching tail is about 280,000 light-years long. Also known as UGC 10214 and Arp 188, it is a disrupted barred spiral galaxy located 420 million light-years from Earth in the northern constellation Draco. Credit Image: NASA/ESA/HST/STScI. by Davicho77

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

|Fewer Letters|More Letters| |-------|---------|---| |ESA|European Space Agency| |HST|Hubble Space Telescope| |JWST|James Webb infra-red Space Telescope|

^(1 acronyms in this thread; )^(the most compressed thread commented on today)^( has acronyms.)
^([Thread #8587 for this sub, first seen 20th Feb 2023, 03:14]) ^[FAQ] ^([Full list]) ^[Contact] ^([Source code])

2

pm_if_u_r_calipygian t1_j98sm8p wrote

Reply to This image of Mars shows the north polar ice cap, the border between highlands and lowlands, former river valleys, plains covered by dark sands and the large Hellas Planitia impact basin in the south. Credit: ESA/DLR/FU Berlin by MistWeaver80

What is the light blue wisps at the top and bottom? My research tells me that mars doesn't have a magnetic field, and though it has a faint aurora, it isn't directed to the poles.

1

marketrent OP t1_j98sh5l wrote

Reply to comment by websterhamster in ‘We found the Artemis-I noise level at 5 km had a crackling quality about 40 million times greater than a bowl of Rice Krispies.’ — Maximum noise measured during Artemis-I launch on 16 Nov. 2022 was higher than predicted by marketrent

From the linked release:^1

>At 1.5 km from the pad, the maximum noise level reached 136 decibels. At a 5.2 km distance, the noise was 129 decibels, nearly 20 decibels higher than predicted by a prelaunch noise model.

^1 The Roar and Crackle of Artemis 1, AIP Publishing, 14 Feb. 2023, https://publishing.aip.org/publications/latest-content/the-roar-and-crackle-of-artemis-1/

10