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APOD: 2026 October 12 – Jupiter and the Moons

2026-10-12 04:05

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

In front of a dark background an image of Earth's Moon  appears with a lower crescent brightly lit. The rest of the Moon is also faintly visible. Above the Moon is a bright point of  light surrounded by four fainter points of light in row. Please see the explanation for more detailed information.

Jupiter and the Moons

Explanation: How many moons can you see? The best answer is five: four orbiting Jupiter and Luna orbiting Earth. This multi-moon picture was possible because Earth’s Moon moved directly in front of Jupiter last week. The featured image is a series of exposures near alignment taken from Westchester, New York, USA. The sunlit crescent of Earth’s Moon, on the lower left, is overexposed, while the Moon’s night side, on the upper right, is faintly illuminated by Earthshine. Lined up nearly vertically above our Moon, listed from bottom to top, are Jupiter’s bright Galilean satellites: Ganymede, Io, Callisto, and Europa. Callisto, Ganymede, and Io are larger than Earth’s Moon, while Europa is only slightly smaller. NASA’s robotic spacecraft Juno is currently orbiting Jupiter and has made close passes near three of these moons.

Tomorrow’s picture: stairway to heaven

Date: October 12, 2026
Credit & Copyright: Chirag Upreti
Authors & editors: Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

Antarctic Sea Ice Grows to Its 2026 Maximum

2026-10-12 04:00

A map shows white Antarctic sea ice on September 14, 2026, the day it reached its annual maximum extent. The 1981–2010 median is outlined in yellow.
Antarctic sea ice reached its annual maximum extent on September 14, 2026—the third-lowest maximum in the satellite record.
NASA Earth Observatory/Michala Garrison

This story is an update to the Antarctic sea ice feature in our World of Change series tracking long-term change on Earth’s surface through satellite imagery.

Unlike the Arctic—an ocean basin surrounded by land—the Antarctic is a large continent surrounded by an ocean. Because of this geography, sea ice has more room to expand during the winter. However, that ice also stretches into warmer latitudes, leading to more melting in the summer. Antarctic sea ice usually peaks in September, around the end of the Southern Hemisphere’s winter, and retreats to a minimum in February.

According to NASA and the National Snow and Ice Data Center (NSIDC), Antarctic sea ice in 2026 likely reached its annual maximum extent on September 14 (above). On that date, the ice covered an estimated 17.59 million square kilometers (6.79 million square miles), making it the third-lowest maximum on record.

The maps below show the average concentration of Antarctic sea ice for the month of September (left) and the following February (right) from 1990 to 2026. Opaque white areas indicate the highest concentrations, and dark blue areas are open water. The images include only areas where ice concentration was at least 15 percent, a threshold scientists commonly use to count an area as ice-covered in satellite data. Scientists refer to the total area of these regions as the “sea ice extent.”

From Record Highs to Record Lows

From 1979 until 2014, total Antarctic sea ice increased by about 1 percent per decade. Whether the increase was a sign of meaningful change is uncertain because ice extents vary considerably from year to year around Antarctica. For three consecutive years, from 2012 to 2014, satellites observed new record highs for winter sea ice extent. These highs occurred while Arctic ice was in steep decline.

The climb came to an end in 2015, and significant decreases in sea ice around Antarctica started to occur in 2016. There have since been years with small rebounds, but overall, Antarctic sea ice coverage has largely remained lower than normal. Both the record low minimum and record low maximum occurred in 2023. Scientists will continue to observe the area each year to find out if the decline is part of a long-term change or a statistical fluctuation.

A line chart of Antarctic sea ice extent shows the 1981–2010 average as a blue dashed line, 2023 (the lowest minimum and lowest maximum on record) in orange, and 2026 in red.

Seeing Through the Clouds

To determine sea ice extent, scientists rely on satellites with passive microwave sensors that measure the microwave energy Earth naturally emits. Sea ice emits more of this energy than open water, so it stands out in microwave images. Because microwaves pass through clouds, the satellites can observe sea ice regularly, regardless of weather.

The record began in late 1978 with data collected by NASA’s Nimbus-7, followed by Defense Meteorological Satellite Program (DMSP) satellites starting in 1987, and by NASA’s Aqua satellite between 2002 and 2011. In 2025, scientists began using observations from the Japan Aerospace Exploration Agency’s GCOM-W satellite. 

NASA Earth Observatory images by Michala Garrison, using data from the National Snow and Ice Data Center.

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APOD: 2026 October 11 – Ice Fishing for Cosmic Neutrinos

2026-10-11 04:05

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A dark cable descends into a deep carved hole of ice.  The hole is so deep that it disappears into darkness. Please see the explanation for more detailed information.

Ice Fishing for Cosmic Neutrinos

Explanation: Scientists are melting holes in the bottom of the world. In fact, almost 100 holes melted near the South Pole are now being used as an astronomical observatory. Astronomers with the IceCube Neutrino Observatory lowered a long string knotted with basketball-sized light detectors into each vertical lake. The water in each hole soon refreezes. The detectors attached to the strings are sensitive to blue light emitted in the surrounding clear ice. Such light results from fast-moving secondary particles liberated when high-energy neutrinos emitted by powerful processes out in the universe collide with ice molecules. IceCube has now detected many illuminating neutrinos. Pictured in 2010, one of the last of IceCube’s detector strings is lowered into the freezing abyss, making IceCube the largest neutrino detector ever created. In recognition of unprecedented discoveries, it was announced earlier this week that a founding leader of the IceCube Collaboration will be awarded the Nobel Prize in Physics.

Tomorrow’s picture: Moons Planet

Date: October 11, 2026
Credit: NSF, B. Gudbjartsson, IceCube Collaboration
Authors & editors: Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

NASA to Conduct Flyover, Engage NFL Fans at MetLife Stadium

2026-10-10 14:18

NASA’s Freedom 250 F-5 team, including NASA Administrator Jared Isaacman, performs a flyover during the national anthem at an NFL game between the Cleveland Browns and the Carolina Panthers at Huntington Bank Field, Sept. 27, 2026, in Cleveland.
Credit: NASA/Jordan Cochran

As part of the agency’s Inspiration Tour flyover, NASA Administrator Jared Isaacman will pilot one of three F-5 fighter jets to kick off the New York Jets vs. Cleveland Browns game in East Rutherford, New Jersey, on Sunday, Oct. 11.

NASA team members will engage with fans at the agency’s Experience Zone, located at the Jets Tailgate Zone outside the stadium, from 10 a.m. to 1 p.m. EDT before the game. Fans can learn more about NASA’s return to the Moon under the agency’s Artemis dome, enjoy interactive games, and capture photos with a large, inflatable SLS (Space Launch System) rocket.

Isaacman will be available for limited media interviews during the game. To arrange interviews, please contact Camille Gallo at: camille.m.gallo@nasa.gov or 202-531-8057.

With stops across the nation, NASA’s Inspiration Tour convenes academic, industry, and public sector stakeholders to connect the agency with the people, technologies, and organizations that drive American leadership in space.

The tour will culminate in MAX POWER, a public exposition of American air and space innovation, Saturday, Nov. 7, and Sunday, Nov. 8, on and near the agency’s Kennedy Space Center in Florida. Held in honor of America’s historic 250th anniversary, the multi-day, family-friendly event will showcase the next-generation aircraft, spacecraft, autonomous vehicles, and technologies that will help define the future of transportation in air and space.

For more information about MAX POWER and the agency’s missions, visit:

https://www.nasa.gov/maxpower

-end-

Camille Gallo / Jessica Taveau
Headquarters, Washington
202-358-1600
camille.m.gallo@nasa.gov / jessica.c.taveau@nasa.gov

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Last Updated
Oct 10, 2026
Editor
Jessica Taveau
APOD: 2026 October 10 – Lunar Farside

2026-10-10 04:05

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A mosaic image of the farside of the Moon.

Lunar Farside

Explanation: Tidally locked in synchronous rotation, the Moon always presents its familiar nearside to denizens of planet Earth. From lunar orbit, the Moon’s farside can become familiar, though. In fact this sharp picture, a mosaic from the Lunar Reconnaissance Orbiter’s wide angle camera, is centered on the lunar farside. Part of a global mosaic of over 15,000 images acquired between November 2009 and February 2011, the highest resolution version shows features at a scale of 100 meters per pixel. Surprisingly, the rough and battered surface of the farside looks very different from the nearside covered with smooth dark lunar maria. A likely explanation is that the farside crust is thicker, making it harder for molten material from the interior to flow to the surface and form dark, smooth maria.

Tomorrow’s picture: Sunday’s Childe

Date: October 10, 2026
Credit: NASA / GSFC / Arizona State Univ. / Lunar Reconnaissance Orbiter
Authors & editors: Jerry Bonnell, Cecilia Chirenti, Robert Nemiroff, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

TechCrunch - Latest

The founder’s guide to TechCrunch Disrupt 2026: Everything you need to know

2026-10-12 00:59

TechCrunch Disrupt 2026 is built around one question: How do you build an enduring company in the AI era? Our programming and speaker lineup reflect that.
Will the HomeView be Apple’s first smart home success?

2026-10-11 21:14

Over the past couple of years, we’ve seen multiple reports that Apple was working on a new smart home product, but now it seems the product has a name and a launch date.
Aaron Sorkin’s ‘Social Reckoning’ is off to a weak start

2026-10-11 20:51

What does this mean for a fall full of movies starring villainous tech CEOs?
48 hours to TechCrunch Disrupt 2026 — hear directly from the people building what’s next

2026-10-11 19:00

Less than 48 hours, TechCrunch Disrupt 2026 starts in San Francisco’s Moscone West. Save up to $100 on your pass before prices increase at the door, plus get 50% on a second pass. Or score other deals.
The investor’s guide to TechCrunch Disrupt 2026: Everything you need to know 

2026-10-11 17:53

Year after year, investors who've explored the Expo Halls, met founders, and learned from peers have proven why you need to be on the ground at Disrupt Oct. 13.
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