Picture from Winter Site Manager Zach Tejral of the Dark Sector Lab (DSL), which hosts the BICEP-3 experiment, and the South Pole Telescope! #ANTARCTICA @NSF @doescience #nsfunded #doefunded
August 9, 2025 at 3:07 AM
Picture from Winter Site Manager Zach Tejral of the Dark Sector Lab (DSL), which hosts the BICEP-3 experiment, and the South Pole Telescope! #ANTARCTICA @NSF @doescience #nsfunded #doefunded
Been clear skies and great observing weather the past week at the #southpole. SPT winterover Karia Dibert was able to get to a visit this nice picture at the RF communications dome, showing some impressive #aurora! @NSF @doescience
May 8, 2025 at 1:33 PM
Been clear skies and great observing weather the past week at the #southpole. SPT winterover Karia Dibert was able to get to a visit this nice picture at the RF communications dome, showing some impressive #aurora! @NSF @doescience
Happy Sunrise at the #southpole #Antarctica this weekend! Officially it happens on the #equinox, but sunrise takes several days/weeks given the unique geographic location on Earth's axis. Pic by winterover Michel of sunrise behind the South Pole marker. @NSF @doescience
September 21, 2026 at 12:53 PM
Happy Sunrise at the #southpole #Antarctica this weekend! Officially it happens on the #equinox, but sunrise takes several days/weeks given the unique geographic location on Earth's axis. Pic by winterover Michel of sunrise behind the South Pole marker. @NSF @doescience
Getting dark quickly at the #southpole now, roughly 1-month past #Sunset, and our winterovers are starting to see some signs of Southern Lights! Below is a pic from Michel using his iphone walking back from the telescope this week. @NSF @doescience
April 22, 2026 at 8:19 PM
Getting dark quickly at the #southpole now, roughly 1-month past #Sunset, and our winterovers are starting to see some signs of Southern Lights! Below is a pic from Michel using his iphone walking back from the telescope this week. @NSF @doescience
A picture of SPT and DSL from winterover Michel last week, with the moon starting to set. Even with the moon up and the red night vision lights on, you can still see the #aurora southern lights. @NSF @doescience #Antarctica #southpole
June 8, 2026 at 12:53 AM
A picture of SPT and DSL from winterover Michel last week, with the moon starting to set. Even with the moon up and the red night vision lights on, you can still see the #aurora southern lights. @NSF @doescience #Antarctica #southpole
Another great @Apple #iphone picture last week from Anjali! A picture of SPT observing, with the Milky Way and southern lights overhead, and several streaking meteors visible. #Antarctica @doescience @NSF
August 19, 2026 at 5:36 PM
Another great @Apple #iphone picture last week from Anjali! A picture of SPT observing, with the Milky Way and southern lights overhead, and several streaking meteors visible. #Antarctica @doescience @NSF
A pic from Site Manager Gavin Reynolds from a couple weeks ago during a full moon. View is from a back stairwell on station looking towards the station power plant, which is generating the smoke plume and about 30-feet below the main station. @NSF @doescience #Antarctica
May 1, 2026 at 9:10 PM
A pic from Site Manager Gavin Reynolds from a couple weeks ago during a full moon. View is from a back stairwell on station looking towards the station power plant, which is generating the smoke plume and about 30-feet below the main station. @NSF @doescience #Antarctica
NSF–DOE Rubin Observatory is jointly funded by @NSF and @doescience, and operated by @noirlabastro and DOE's @slaclab.
🎥: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA
🎥: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA
June 30, 2026 at 3:06 PM
NSF–DOE Rubin Observatory is jointly funded by @NSF and @doescience, and operated by @noirlabastro and DOE's @slaclab.
🎥: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA
🎥: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA
Picture of some #southpole winterovers enjoying a walk to the "end of the world", marking the edge of the official station footprint, and enjoying some winter #aurora. Pic by SPT's Sim Bash! @NSF @doescience
May 20, 2025 at 3:39 AM
Picture of some #southpole winterovers enjoying a walk to the "end of the world", marking the edge of the official station footprint, and enjoying some winter #aurora. Pic by SPT's Sim Bash! @NSF @doescience
SPT winterover Karia Dibert pictured under a nearly full moon (or moondog) at the #southpole (Pic by Toshin Rao). On a 2-mile thick ice sheet in many directions the horizon is featureless, and the moon beautifully highlights the sastrugi. @NSF @doescience #Antarctica
June 16, 2025 at 5:42 PM
SPT winterover Karia Dibert pictured under a nearly full moon (or moondog) at the #southpole (Pic by Toshin Rao). On a 2-mile thick ice sheet in many directions the horizon is featureless, and the moon beautifully highlights the sastrugi. @NSF @doescience #Antarctica
Recent pic of the southern lights #aurora above the #southpole marker with the @NSF Amundsen-Scott South Pole station in the background. Pic by SPT winterover Michel @doescience #Antarctica
June 12, 2026 at 1:31 AM
Recent pic of the southern lights #aurora above the #southpole marker with the @NSF Amundsen-Scott South Pole station in the background. Pic by SPT winterover Michel @doescience #Antarctica
Full moon as viewed from the South Pole this week during an afternoon walk out from station to DSL, pic by winterover Michel! Nice moon dog around the moon also provides nice contrast to see the landscape on the walk to the telescope. @NSF @doescience #Antarctica
June 29, 2026 at 8:28 PM
Full moon as viewed from the South Pole this week during an afternoon walk out from station to DSL, pic by winterover Michel! Nice moon dog around the moon also provides nice contrast to see the landscape on the walk to the telescope. @NSF @doescience #Antarctica
Picture from winterover Michel of SPT this week. Still a couple weeks away until #sunrise, however you can still see the glow from below the horizon to the left of this image. Clear dark blue skies and great observing this past week. #LaborDay @NSF @doescience #Antarctica
September 7, 2026 at 11:13 PM
Picture from winterover Michel of SPT this week. Still a couple weeks away until #sunrise, however you can still see the glow from below the horizon to the left of this image. Clear dark blue skies and great observing this past week. #LaborDay @NSF @doescience #Antarctica
This time of year is a great time for #southpole pictures, including this one from Anjali, showing the deep blue skies right now! You can really see the ice and snow buildup on and around the building by mid-winter. #Antarctica #NSF #DOEScience
July 8, 2026 at 9:29 PM
This time of year is a great time for #southpole pictures, including this one from Anjali, showing the deep blue skies right now! You can really see the ice and snow buildup on and around the building by mid-winter. #Antarctica #NSF #DOEScience
Only a few weeks away from mid-winter, during the solstice on June-21. Weather has been unseasonably warm at #southpole, getting as high as -42 deg Fahrenheit last week. Here is a pic from winterover Michel, of SPT and DSL, lit by the moonlight.
@NSF @doescience #Antarctica
@NSF @doescience #Antarctica
June 2, 2026 at 7:31 PM
Only a few weeks away from mid-winter, during the solstice on June-21. Weather has been unseasonably warm at #southpole, getting as high as -42 deg Fahrenheit last week. Here is a pic from winterover Michel, of SPT and DSL, lit by the moonlight.
@NSF @doescience #Antarctica
@NSF @doescience #Antarctica
July is the last month of darkness at the #southpole, the skies are noticeably getting brighter. Still time for some #aurora, here is a pic from winterover Anjali showing some during the walk from station to the Dark Sector (with a person walking in distance) @NSF @doescience
August 3, 2026 at 5:44 PM
July is the last month of darkness at the #southpole, the skies are noticeably getting brighter. Still time for some #aurora, here is a pic from winterover Anjali showing some during the walk from station to the Dark Sector (with a person walking in distance) @NSF @doescience
Picture of the #sunrise behind SPT and @BICEP_Keck in the Dark Sector from a few weeks ago by SPT winterover Sim Bash #southpole #Antarctica @NSF @doescience
October 10, 2025 at 3:47 AM
Picture of the #sunrise behind SPT and @BICEP_Keck in the Dark Sector from a few weeks ago by SPT winterover Sim Bash #southpole #Antarctica @NSF @doescience
Picture of SPT obserivng last week, with the Sun finally almost fully below the horizon. Since then the Sun has fully set, and #southpole winter has begun and SPT began 2026 observations of its 1500d Main field! @NSF @doescience #Antarctica
March 30, 2026 at 2:46 PM
Picture of SPT obserivng last week, with the Sun finally almost fully below the horizon. Since then the Sun has fully set, and #southpole winter has begun and SPT began 2026 observations of its 1500d Main field! @NSF @doescience #Antarctica
The South Pole ceremonial marker, pic by winterover Michel. Still bright enough to see a little bit of Sun on the horizon in the reflection off the marker, but the moon is the brightest thing in the sky right now. #Antarctica @NSF @doescience
April 7, 2026 at 11:50 PM
The South Pole ceremonial marker, pic by winterover Michel. Still bright enough to see a little bit of Sun on the horizon in the reflection off the marker, but the moon is the brightest thing in the sky right now. #Antarctica @NSF @doescience
The Sun has set at the #southpole since we are past the #equinox. However, last week, this was one of the last pictures taken by winterover Michel of the Sun spiraling towards the horizon in the direction of SPT and DSL buildings. @NSF @doescience #Antarctica
March 23, 2026 at 1:10 PM
The Sun has set at the #southpole since we are past the #equinox. However, last week, this was one of the last pictures taken by winterover Michel of the Sun spiraling towards the horizon in the direction of SPT and DSL buildings. @NSF @doescience #Antarctica
Within a week of #sunset at the #southpole. Pic by winterover Anjali with SPT looking #golden backlight by the Sun, which is now only about 1.5 degrees above the horizon. We will start our Main survey observations later this week after Sunset. @NSF @doescience
March 16, 2026 at 12:54 PM
Within a week of #sunset at the #southpole. Pic by winterover Anjali with SPT looking #golden backlight by the Sun, which is now only about 1.5 degrees above the horizon. We will start our Main survey observations later this week after Sunset. @NSF @doescience
Roughly 6 weeks after $Sunset and we are in the darkest time of winter, here is a photo from winterover Michel of a nearly fully moon over the SPT this weekend! Observing weather has been great recently, with consistently dry clear skies #southpole #Antarctica @NSF @doescience
May 4, 2026 at 1:03 PM
Roughly 6 weeks after $Sunset and we are in the darkest time of winter, here is a photo from winterover Michel of a nearly fully moon over the SPT this weekend! Observing weather has been great recently, with consistently dry clear skies #southpole #Antarctica @NSF @doescience
During the full moon a few days ago, SPT winterover Michel also captured this great pic of the moon behind the #southpole marker and ceremonial flags. The moon peaks at 28.7-deg elevation and is a full moon at its peak during the June solstice. #Antarctica @doescience @NSF
June 3, 2026 at 8:57 PM
During the full moon a few days ago, SPT winterover Michel also captured this great pic of the moon behind the #southpole marker and ceremonial flags. The moon peaks at 28.7-deg elevation and is a full moon at its peak during the June solstice. #Antarctica @doescience @NSF
Only four days until #sunset with SPT still looking #golden with the setting Sun. The moon is also up right now at the South Pole, visible at low elevation in the distance, near where SPT is currently observing. Pic by winterover Anjali. #Antarctica @NSF @doescience
March 17, 2026 at 4:49 PM
Only four days until #sunset with SPT still looking #golden with the setting Sun. The moon is also up right now at the South Pole, visible at low elevation in the distance, near where SPT is currently observing. Pic by winterover Anjali. #Antarctica @NSF @doescience