Behold, directly overhead, a certain strange star was suddenly seen...
Amazed, and as if astonished and stupefied, I stood still.

— Tycho Brahe

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Flower-like origami patterns could inspire folding spacecraft

New Scientist Space - Cosmology - Tue, 08/19/2025 - 8:01pm
Engineers have developed a class of origami structures that unfold in one smooth motion to create flower-like shapes, which could have applications in space
Categories: Astronomy

Flower-like origami patterns could inspire folding spacecraft

New Scientist Space - Space Headlines - Tue, 08/19/2025 - 8:01pm
Engineers have developed a class of origami structures that unfold in one smooth motion to create flower-like shapes, which could have applications in space
Categories: Astronomy

<p><a href="https://apod.nasa.gov/apod

APOD - Tue, 08/19/2025 - 8:00pm

What lies in the heart of Orion?


Categories: Astronomy, NASA

The Milky Way's faintest satellite may not be what astronomers thought. 'These results solve a major mystery in astrophysics'

Space.com - Tue, 08/19/2025 - 5:00pm
A distant galaxy nicknamed "Cosmic Grapes" is bursting with massive star-forming clumps — far more than expected — offering fresh clues about how galaxies grew in the early universe.
Categories: Astronomy

Moonquakes Will Pose Risks To Long-term Lunar Base Structures

Universe Today - Tue, 08/19/2025 - 4:29pm

Our Moon is a seismically active world and its long history of quakes could affect the safety of permanent base structures there. That's one conclusion from a study of quakes along the Lee-Lincoln fault in the Taurus-Littrow valley where the Apollo 17 astronauts landed in 1972. “The global distribution of young thrust faults like the Lee-Lincoln fault, their potential to be still active and the potential to form new thrust faults from ongoing contraction should be considered when planning the location and assessing stability of permanent outposts on the Moon,” said Smithsonian senior scientist emeritus Thomas R. Watters, lead author of the paper.

Categories: Astronomy

Researchers Simulate What a Black Hole "Shadow" Looks Like

Universe Today - Tue, 08/19/2025 - 4:29pm

Supercomputer simulations are helping scientists sharpen their understanding of the environment beyond a black hole’s "shadow," material just outside its event horizon.

Categories: Astronomy

The JWST Shows Us That TRAPPIST-1d Is Not As Earth-Like As We Hoped

Universe Today - Tue, 08/19/2025 - 4:29pm

The exoplanet TRAPPIST-1 d intrigues astronomers looking for possibly habitable worlds beyond our Solar System because it is similar in size to Earth, rocky, and resides in an area around its star where liquid water on its surface is theoretically possible. But according to a new study using data from the NASA/ESA/CSA James Webb Space Telescope, it does not have an Earth-like atmosphere.

Categories: Astronomy

Mystery of the "Little Red Dots" May Finally Be Solved

Universe Today - Tue, 08/19/2025 - 4:29pm

Deep in the darkness, tiny red specks of light have been driving astronomers to distraction. These mysterious "little red dots" discovered by the James Webb Space Telescope shouldn't exist, they’re impossibly compact yet blazingly bright, defying our understanding of how galaxies form. Now, Harvard researchers believe they've solved this billion year old puzzle with a theory involving the universe's rarest structures; dark matter halos.

Categories: Astronomy

A Simple Instrument Could Find Martian DNA - If It Exists

Universe Today - Tue, 08/19/2025 - 4:29pm

Mars still holds the promise of being one of the first places in the solar system humanity will colonize. However, if there was evolutionarily distinct, extant life on the planet, it might sway the heart of even the most ardent Mars colonization fans. So astrobiologists are in a race against time to try to determine whether or not such life exists, before the entire planet becomes an analogue of the Earth’s biosphere, if only unintentionally, and only a shadow of the ones that exists here. A new paper from the Christopher Temby and Jan Spacek of the Agnostic Life Finder (ALF) team discusses one of the most promising ways to prove definitively that life exists on the Red Planet - finding polyelectrolyte polymers - in other words, DNA.

Categories: Astronomy

The Vibrational Lives of Black Holes

Universe Today - Tue, 08/19/2025 - 4:29pm

When black holes are disrupted by things like infalling matter or gravitational waves, they vibrate like a bell struck with a clapper. The vibrations decay over time as the black hole returns to an equilibrium state. Astrophysicists can measure these vibrations to learn more about the black hole.

Categories: Astronomy

NASA’s James Webb Space Telescope Discovers New Moon of Uranus

Scientific American.com - Tue, 08/19/2025 - 4:20pm

Using the powerful James Webb Space Telescope, scientists have spotted a moon nestled near Uranus’s rings that’s so small you could walk around it

Categories: Astronomy

Supernovas are hard to detect. Scientists just found a way to spot them hours after they explode

Space.com - Tue, 08/19/2025 - 4:15pm
Astronomers have learned how to find supernova explosions in their earliest stages, giving us an unprecedented look at how these stars blow up.
Categories: Astronomy

Why Hurricanes like Erin Trigger Rip Currents Hundreds of Miles Away

Scientific American.com - Tue, 08/19/2025 - 4:03pm

From Miami to Maine, the East Coast is under moderate or high rip current risk advisories because of Hurricane Erin

Categories: Astronomy

Curiosity Blog, Sols 4634-4635: A Waiting Game

NASA News - Tue, 08/19/2025 - 3:22pm
Curiosity Navigation

3 min read

Curiosity Blog, Sols 4634-4635: A Waiting Game NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on Aug. 18, 2025 — Sol 4633, or Martian day 4,633 of the Mars Science Laboratory mission — at 12:39:47 UTC. NASA/JPL-Caltech

Written by Lucy Thompson, Planetary Scientist and APXS Team Member, University of New Brunswick, Canada

Earth Planning Date: Monday, Aug. 18, 2025

The downlink data from our weekend activities arrived on Earth as we started planning this morning. As the APXS payload uplink and downlink lead, I assess the downlink data to ensure that our observations executed and that the instrument is healthy before we can proceed with the day’s activities. We also need that downlink data to assess which targets we can safely touch with Curiosity’s arm, to place APXS and MAHLI to analyze chemistry and closeup textures, respectively, as well as target for Mastcam and ChemCam, and plan the next drive. Because of the relatively late downlink, we all waited patiently for the necessary data to be processed before we could really start to plan in earnest. 

It is always exciting to see our new parking spot and the view in front of the rover. Today was no exception. The drive executed as planned and we are on stable ground, which will enable us to unstow the arm for contact science with APXS and MAHLI.

We selected a representative bedrock patch (“Gil”) that was large enough and smooth enough to brush for dust removal, and to place APXS and MAHLI on. ChemCam will also analyze this target with LIBS, and Mastcam will capture a documentation image. The bedrock at this location is representative of an intermediate zone between the large resistant ridges and hollows that comprise the boxwork terrain that we are currently exploring. Mastcam will image the wall of a prominent resistant ridge that we are driving to (“Río Frío”), as well as a narrow, sand-filled trough (“Cusi Cusi”). The remote long-distance imaging capabilities of ChemCam will be used to look at the base of the Mishe Mokwa butte, off to the east.

Observations to monitor the atmosphere are also planned before we drive away from this location. They include a Navcam large dust-devil survey and suprahorizon movie, and a Mastcam tau observation to observe dust in the atmosphere. After the touch (and targeted science) part of this touch-and-go plan, the drive (go part) should take us about 36 meters (about 118 feet) to the wall of Río Frío. (see associated image). 

After the drive, we will document the ground beneath the rover’s wheels with MARDI before some untargeted science. Mastcam will again image Río Frío in early morning light, trying to highlight structures and veins that might be present, and ChemCam will utilize their autonomous targeting capabilities to analyze a bedrock target in our new workspace. Two more atmospheric observations are also squeezed in before we hand over to the next plan: a Navcam cloud-altitude observation and line-of-sight scan. 

Standard REMS, DAN and RAD activities round out this jam-packed plan. The downlink was well worth the wait!

NASA’s Mars rover Curiosity at the base of Mount Sharp NASA/JPL-Caltech/MSSS

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Last Updated

Aug 19, 2025

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Curiosity Blog, Sols 4634-4635: A Waiting Game

NASA - Breaking News - Tue, 08/19/2025 - 3:22pm
Curiosity Navigation

3 min read

Curiosity Blog, Sols 4634-4635: A Waiting Game NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on Aug. 18, 2025 — Sol 4633, or Martian day 4,633 of the Mars Science Laboratory mission — at 12:39:47 UTC. NASA/JPL-Caltech

Written by Lucy Thompson, Planetary Scientist and APXS Team Member, University of New Brunswick, Canada

Earth Planning Date: Monday, Aug. 18, 2025

The downlink data from our weekend activities arrived on Earth as we started planning this morning. As the APXS payload uplink and downlink lead, I assess the downlink data to ensure that our observations executed and that the instrument is healthy before we can proceed with the day’s activities. We also need that downlink data to assess which targets we can safely touch with Curiosity’s arm, to place APXS and MAHLI to analyze chemistry and closeup textures, respectively, as well as target for Mastcam and ChemCam, and plan the next drive. Because of the relatively late downlink, we all waited patiently for the necessary data to be processed before we could really start to plan in earnest. 

It is always exciting to see our new parking spot and the view in front of the rover. Today was no exception. The drive executed as planned and we are on stable ground, which will enable us to unstow the arm for contact science with APXS and MAHLI.

We selected a representative bedrock patch (“Gil”) that was large enough and smooth enough to brush for dust removal, and to place APXS and MAHLI on. ChemCam will also analyze this target with LIBS, and Mastcam will capture a documentation image. The bedrock at this location is representative of an intermediate zone between the large resistant ridges and hollows that comprise the boxwork terrain that we are currently exploring. Mastcam will image the wall of a prominent resistant ridge that we are driving to (“Río Frío”), as well as a narrow, sand-filled trough (“Cusi Cusi”). The remote long-distance imaging capabilities of ChemCam will be used to look at the base of the Mishe Mokwa butte, off to the east.

Observations to monitor the atmosphere are also planned before we drive away from this location. They include a Navcam large dust-devil survey and suprahorizon movie, and a Mastcam tau observation to observe dust in the atmosphere. After the touch (and targeted science) part of this touch-and-go plan, the drive (go part) should take us about 36 meters (about 118 feet) to the wall of Río Frío. (see associated image). 

After the drive, we will document the ground beneath the rover’s wheels with MARDI before some untargeted science. Mastcam will again image Río Frío in early morning light, trying to highlight structures and veins that might be present, and ChemCam will utilize their autonomous targeting capabilities to analyze a bedrock target in our new workspace. Two more atmospheric observations are also squeezed in before we hand over to the next plan: a Navcam cloud-altitude observation and line-of-sight scan. 

Standard REMS, DAN and RAD activities round out this jam-packed plan. The downlink was well worth the wait!

NASA’s Mars rover Curiosity at the base of Mount Sharp NASA/JPL-Caltech/MSSS

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Last Updated

Aug 19, 2025

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Pixar's 'Elio' stars get space food tips from a real-life astronaut in this exclusive bonus clip (video)

Space.com - Tue, 08/19/2025 - 3:14pm
The family-friendly animated outer space flick scores its home video release starting today (Aug. 19).
Categories: Astronomy

'NASA is science': How real space exploration inspired Moleskine's new NASA-themed notebook collection (interview)

Space.com - Tue, 08/19/2025 - 3:00pm
We chatted to Moleskine President Ward Simmons about their new NASA-inspired notebook collection.
Categories: Astronomy

Curiosity Blog, Sols 4631-4633: Radiant Ridge Revolution

NASA News - Tue, 08/19/2025 - 2:40pm
Curiosity Navigation

2 min read

Curiosity Blog, Sols 4631-4633: Radiant Ridge Revolution NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on Aug. 14, 2025 — Sol 4629, or Martian day 4,629 of the Mars Science Laboratory mission — at 12:11:32 UTC. NASA/JPL-Caltech

Written by Remington Free, Operations Systems Engineer at NASA’s Jet Propulsion Laboratory

Earth planning date: Friday, Aug. 15, 2025

Today we uplinked a three-sol weekend plan with lots of exciting activities — to support both the science and engineering teams! 

While usually our science activities take front and center stage, we often also do engineering maintenance activities as well to maintain the mechanisms and engineering health state of the rover. On Sol 4631, we planned a maintenance activity of our Battery Control Boards (BCBs) which are electronic control boards attached to the rover’s batteries and are what let us interact with the batteries as needed. This maintenance is done periodically to correct for any time drift on the BCBs, so we get as accurate of data as possible. 

On this sol, we also did a dump of all of our parameters — these are essentially variables set onboard the rover which serve as inputs to a variety of functions. Occasionally we send a list of all these variables back down to the ground so we can verify they match as expected. We don’t want to have set a value and then forget about it!

We, of course, also did science activities on this sol. After completing our engineering activities, we started off with some remote science; this included Mastcam imaging and ChemCam measurements of several interesting targets. These were chosen in order to assess variability within the “Cerro Paranal” ridge within view, and to document any layering or fractures in the rock. We then completed several arm activities in order to get more information on these targets through the use of our APXS spectrometer. 

On Sol 4632, we planned some remote atmospheric science, including a Navcam dust-devil survey, a Mastcam tau (measurement of the atmospheric opacity), APXS atmospheric observations, and more imaging of some of the ridge targets we looked at in the previous sol. 

On Sol 4633, we continued with more science imaging, including a horizon movie using Navcam and a dust-devil movie, before proceeding into our drive. We planned a drive of about 19 meters (about 62 feet) to the south, along the eastern edge of Cerro Paranal. After the drive, it is then standard for us to take new imaging of our new location. We’re excited to get these science images back and to hear how the drive went when the team comes back on Monday!

NASA’s Mars rover Curiosity at the base of Mount Sharp NASA/JPL-Caltech/MSSS

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Aug 19, 2025

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Curiosity Blog, Sols 4631-4633: Radiant Ridge Revolution

NASA - Breaking News - Tue, 08/19/2025 - 2:40pm
Curiosity Navigation

2 min read

Curiosity Blog, Sols 4631-4633: Radiant Ridge Revolution NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on Aug. 14, 2025 — Sol 4629, or Martian day 4,629 of the Mars Science Laboratory mission — at 12:11:32 UTC. NASA/JPL-Caltech

Written by Remington Free, Operations Systems Engineer at NASA’s Jet Propulsion Laboratory

Earth planning date: Friday, Aug. 15, 2025

Today we uplinked a three-sol weekend plan with lots of exciting activities — to support both the science and engineering teams! 

While usually our science activities take front and center stage, we often also do engineering maintenance activities as well to maintain the mechanisms and engineering health state of the rover. On Sol 4631, we planned a maintenance activity of our Battery Control Boards (BCBs) which are electronic control boards attached to the rover’s batteries and are what let us interact with the batteries as needed. This maintenance is done periodically to correct for any time drift on the BCBs, so we get as accurate of data as possible. 

On this sol, we also did a dump of all of our parameters — these are essentially variables set onboard the rover which serve as inputs to a variety of functions. Occasionally we send a list of all these variables back down to the ground so we can verify they match as expected. We don’t want to have set a value and then forget about it!

We, of course, also did science activities on this sol. After completing our engineering activities, we started off with some remote science; this included Mastcam imaging and ChemCam measurements of several interesting targets. These were chosen in order to assess variability within the “Cerro Paranal” ridge within view, and to document any layering or fractures in the rock. We then completed several arm activities in order to get more information on these targets through the use of our APXS spectrometer. 

On Sol 4632, we planned some remote atmospheric science, including a Navcam dust-devil survey, a Mastcam tau (measurement of the atmospheric opacity), APXS atmospheric observations, and more imaging of some of the ridge targets we looked at in the previous sol. 

On Sol 4633, we continued with more science imaging, including a horizon movie using Navcam and a dust-devil movie, before proceeding into our drive. We planned a drive of about 19 meters (about 62 feet) to the south, along the eastern edge of Cerro Paranal. After the drive, it is then standard for us to take new imaging of our new location. We’re excited to get these science images back and to hear how the drive went when the team comes back on Monday!

NASA’s Mars rover Curiosity at the base of Mount Sharp NASA/JPL-Caltech/MSSS

Share

Details

Last Updated

Aug 19, 2025

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Mars Exploration: Science Goals

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Categories: NASA

New moon discovered orbiting Uranus is its smallest one

New Scientist Space - Space Headlines - Tue, 08/19/2025 - 2:20pm
The James Webb Space Telescope has discovered a new moon that is small and dim in orbit around Uranus. The discovery brings the planet's total to 29, and scientists say there are probably more to be found
Categories: Astronomy