
See A ‘Sturgeon Moon' Rise With Naked Eyes: The Night Sky This Week
The Night Sky This Week: August 4-10, 2025
August is one of the best months of the year for stargazing in the Northern Hemisphere, with warm evenings, lengthening nights and the appearance of the Milky Way right after dark. The latter will take a back seat this week because of a full moon — the sturgeon moon — rising into summer skies at dusk and shining much of the night. Here's everything you need to know about stargazing and astronomy this week:
Friday, August 8: See The 'Sturgeon Moon' Rising
Tonight's nearly full moon rises in the east at dusk, shining an orange, then yellow hue as it climbs into the evening sky. Named the sturgeon moon, this full phase offers a beautiful sight just after sunset. It's the perfect opportunity to get somewhere with a low view of the horizon and enjoy a magical moonrise moment.
Saturday, August 9: A Second 'Sturgeon Moon' Rising
Although it was best seen last night, there's another chance tonight. The moon actually turns full at 3:56 a.m. EDT, and will rise shortly after sunset, giving stargazers another chance to see it glowing orange on the eastern horizon.
Star of The Week: Arcturus
Arcturus, in the constellation Boötes, is one of the most famous stars of summer in the Northern Hemisphere. You'll find it shining in the west and easy to find using the handle of the Big Dipper thanks to the well-known star-hop 'arc to Arcturus.' A red giant star, Arcturus, is just 37 light-years from the solar system and the fourth brightest star in the night sky.
Constellation Of The Week: Lyra
Although the moon is up this week, some of the brighter stars and constellations will remain easy pickings. One is Lyra, a small but striking constellation centered on bright star Vega — the top-left star in the vast Summer Triangle asterism found above southeast after dark this month. Look for a small parallelogram of stars near Vega. It also contains the famous Ring Nebula (M57), visible in small telescopes.
The times and dates given apply to mid-northern latitudes. For the most accurate location-specific information, consult online planetariums like Stellarium.
Wishing you clear skies and wide eyes.
Hashtags

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles
Yahoo
20 minutes ago
- Yahoo
'Sleeping giant' fault beneath Canada could unleash a major earthquake, research suggests
When you buy through links on our articles, Future and its syndication partners may earn a commission. A major fault in the Yukon, Canada, that has been quiet for at least 12,000 years may be capable of giving off earthquakes of at least magnitude 7.5, new research suggests. Based on the amount of strain the Tintina fault has accumulated over the past 2.6 million years, it is now under an amount of stress that could lead to a large quake within a human lifespan, researchers reported July 15 in the journal Geophysical Research Letters. The finding may require experts to rethink the earthquake danger in the region, the study authors said. An magnitude 7.5 earthquake would threaten a few small communities within the remote Yukon. But the finding that the Tintina fault may be capable of such a large quake is notable because the fault has been quiet since before the last ice age ended. "Major ancient faults like that can remain as weak zones in the Earth's crust and then focus ongoing tectonic strain," Theron Finley, a geoscientist who conducted the research while earning his doctorate at the University of Victoria in Canada, told Live Science. The Tintina fault is over 620 miles (1,000 kilometers) long and stretches from northeast British Columbia through the Yukon and into Alaska. On its southern end, it connects to the Rocky Mountain Trench fault, which creates a huge valley through southern Canada and northern Montana. Forty million years ago, during the Eocene epoch, one side of the Tintina fault slid 267 miles (430 km) against the other at a rate of about half an inch (13 millimeters) each year. Today, the fault seems quiet, with only occasional small earthquakes of magnitude 3 to 4 in some sections. However, "there has always been a question of whether it's still a little bit active or still accumulating strain at a slower rate," Finley said. To find out, Finley and his colleagues used high-resolution satellite data and lidar imagery of the Yukon. Lidar is a type of laser measurement that allows for precise imaging of topography while ignoring vegetation — an important tool for an area blanketed with forest. With this imagery, the researchers looked for signs on the surface of ancient earthquakes, such as fault "scarps," where the ground moved sharply upward on one side of the fault. "Those features can be hundreds of kilometers long in some cases, but they're only on the order of a couple meters high or wide, so we need the really high-resolution topographic data," Finley said. The researchers determined the dates of each rumple of the landscape by using traces left by incursions of glaciers, which occurred at known intervals 12,000 years ago, 132,000 years ago, and 2.6 million years ago. They found that over 2.6 million years, the fault's sides moved relative to each other by about 3,300 feet (1,000 m). Over the past 136,000 years, the opposing sides of the fault moved about 250 feet (75 m). It probably took hundreds of earthquakes to accumulate all that movement, Finley said, which translates to between 0.008 and 0.03 inches (0.2 to 0.8 mm) per year. The fault has not had a large earthquake that ruptured the ground surface for at least 12,000 years, according to the study. The researchers estimate that in that period, the fault has accumulated about 20 feet (6 m) of built-up strain — movement that hasn't yet been released in an earthquake. The fault probably breaks at between 3 and 33 feet (1 to 10 m) of strain, Finley said, so it's in the range where it might normally fracture. "It could still be many thousands of years before it reaches the threshold where it ruptures, but we don't know that and it's very hard to predict that," Finley said. Because the fault is active in its Alaska portion, it's not surprising to learn that the Tintina fault could be a sleeping giant, said Peter Haeussler, a geologist emeritus at the U.S. Geological Survey in Alaska. He said he was glad to see the evidence emerge."Somebody's finally found evidence for activity on the Tintina fault in the Yukon," Haeussler told Live Science. RELATED STORIES —There's a massive fault hiding under America's tallest mountain —Mystery magma reservoir found in volcanoless region of Alaska —Seattle's massive fault may result from oceanic crust 'unzipping itself' 55 million years ago "It ups the seismic hazard for this neck of the woods a little bit," he added, but not enormously, as the region was already known to be seismically active. The fault runs near Dawson City, Canada, Finley said, which has a population of about 1,600 and would be most threatened by a large quake. There are also mining facilities in the area, as well as a risk of quake-triggered landslides. To better understand the risk, geoscientists will need to excavate trenches in the fault to look for rock layers that show past earthquakes and how often they occurred. "Right now, we just know that many have occurred, but we don't have a sense of how frequently," Finley said. "Is 6 meters a lot of strain, or is it more likely there's a long way to go before another rupture?"
Yahoo
22 minutes ago
- Yahoo
Venus and Jupiter conjunction 2025: How to see two iconic planets meet in the morning sky
When you buy through links on our articles, Future and its syndication partners may earn a commission. If you set your alarm clock for 4 a.m. local time this week and head outside to a location with a clear and unobstructed view of the eastern horizon, you'll be able to catch sight of the two brightest planets, Venus and Jupiter. The winter constellation Orion will be off to their right. During this upcoming week, you'll be able to watch as they get closer to each other with each passing morning. On Aug.6, the two planets will be separated by 5.8 degrees; just a little more than a half fist apart. By Aug. 10, the gap between the two will have closed to just two degrees. Remember that your clenched fist held at arm's length measures roughly 10 degrees. The time frame from Aug. 12 through Aug. 20 will be an exceptional time for predawn sky watchers, first with an eye-catching pairing of Venus and Jupiter on Aug. 12, followed a week later when the waning crescent moon drops by to join them. Venus and Jupiter will appear closest together on Tuesday morning, Aug. 12. The moment of closest approach (just 0.86 of a degree; less than twice the apparent diameter of the moon) will come when this "dynamic duo" is hovering above the east-northeast horizon across much of North America. Venus will dazzle at magnitude -4.0, while Jupiter, itself shining at a brilliant magnitude of -1.9, will appear to glow to the upper left of Venus. Your best view will come one-quarter up from the east-northeast horizon about 45 minutes before sunrise. They are both high enough at dawn to present reasonably steady images (on good mornings) but most interesting this month is to see the globes of both together in one fairly wide telescopic field-of-view on Aug. 11 or Aug. 12. Jupiter is more than twice the apparent diameter of Venus, and yet Venus is a far more effective reflector of sunlight because it is more than seven times closer to the sun compared to Jupiter. The moon pays a visit Then, one week later, on Tuesday, Aug. 19, although the gap between Venus and Jupiter will have widened to 7 degrees, a narrow crescent moon, 15 percent illuminated by the sun, will join them, making for a striking triangular configuration in the morning twilight. On this morning, the moon will appear about 8 degrees directly above Jupiter. Then, come the very next morning (Wednesday, Aug. 20), the crescent moon will have noticeably thinned to 8% and will appear to hover just 4.5 degrees to the upper left of Venus. Adding to the spectacle on both mornings will be the phenomenon known as Earthshine; sunlight reflected from Earth illuminates the night side of the moon, making its whole disk visible. Here is one of nature's beautiful sights and fits the old saying, "the old moon in the new moon's arms." In a pair of binoculars on Aug. 20, the moon will appear three-dimensional, like an eerie yellow and blue ball with diamond-like Venus blazing to its upper left. Upcoming get-togethers When Venus and Jupiter next get together, it will be in the evening sky late next spring, a few weeks before Independence Day, though not as close as what we will see this month. Generally speaking, conjunctions between Venus and Jupiter, as seen from the Earth, take place at mean intervals of 13 months, or more precisely 398.88 days, known as the synodic period of Jupiter (the time it takes Jupiter to return to the same position relative to the sun in the sky as seen from Earth). Check out the table below for future Venus-Jupiter pairings for the rest of this decade. 2026 June 9 Evening sky 1.6 degrees 2027 Aug. 26 Evening sky 0.5 degree 2028 Nov. 9 Morning sky 0.6 degree 2029 Sept. 7 Evening sky 1.7 degrees 2030 Nov. 20 Morning sky 0.6 degree Sometimes, the interval between two successive Venus-Jupiter conjunctions is only ten months, as in the case of August 2025 and June 2026, but in other situations, the interval can be as much as 15 months (such as from August 2027 to November 2028). Inevitably, some conjunctions cannot be observed because they occur too close to the sun in the sky. This will be the case, for instance, for the conjunctions in 2027 and 2030. On these occasions, the planets will be positioned (respectively) only 4 and 8 degrees from the blindingly bright solar disc. The 24-year cycle The sidereal revolution periods (sidereal means "with respect to the stars") of Venus, Earth and Jupiter are — respectively — 224.70, 365.25 and 4,332.58 days. If we multiply the sidereal period of Venus by 39 (8763.3 days), Earth by 24 (8766 days) and Jupiter by 2 (8665.16 days) they come very close to replicating the same type of conjunction under nearly identical conditions (occurring approximately about a week later in the calendar) every 24 years. Check out the table below. Provided are the dates, the separation between the two planets in angular degrees and the elongation or angular distance of the two planets from the sun. Date Separation Elongation 1929 July 14 2.2 degrees 45.1 degrees 1953 July 23 1.9 degrees 43.2 degrees 1977 July 30 1.6 degrees 41.0 degrees 2001 Aug. 5 1.2 degrees 38.6 degrees 2025 Aug. 12 0.9 degrees 35.2 degrees Notice how the two planets are getting progressively closer to each other with each passing 24-year cycle. The closest observable conjunction between the two will come on September 4, 2121, when they will be separated by a mere 0.13 degrees, or about one-quarter the apparent diameter of the moon, while low in the dawn twilight. TOP TELESCOPE PICK Want to see the Venus and Jupiter conjunction for yourself? The Celestron NexStar 8SE is ideal for beginners wanting quality, reliable and quick views of celestial objects. For a more in-depth look at our Celestron NexStar 8SE review. But this 24-cycle cannot go on forever, because while Jupiter can appear in any part of the sky, Venus can never get more than 47 degrees from the sun; so generally speaking, these Venus-Jupiter get-togethers occurring at 24-year intervals can last for no more than roughly 900 years. This current cycle began back in 1881, when an unusual triple conjunction between the two planets took place. The first two get-togethers came on Feb. 20 and May 14. But it was the third conjunction on June 20, 1881, in the morning sky, that began the current 24-year cycle. This will continue until the very last, an evening apparition on Jan. 30, 2746. Joe Rao serves as an instructor and guest lecturer at New York's Hayden Planetarium. He writes about astronomy for Natural History magazine, Sky and Telescope and other publications.
Yahoo
23 minutes ago
- Yahoo
Milky Way and zodiacal light glow above telescopes in Chile
When you buy through links on our articles, Future and its syndication partners may earn a commission. Recently, the Chilean night sky was illuminated by the glow of the Milky Way galaxy as it was seen above the domes of telescopes at the Cerro Tololo Inter-American Observatory (CTIO), a facility of the National Science Foundation's (NSF) NOIRLab. What is it? A cone of zodiacal light intersects the iconic Milky Way, creating an x-shape in the night sky. NOIRLab highlighted this x-shape in a recent LinkedIn post, saying: " X marks the spot at Cerro Tololo!" Zodiacal light extends in a triangular shape from Earth's horizon along the ecliptic, the apparent annual path of the sun across the sky, serving as the baseline for positions of the planets and zodiac constellations. This special light is the reflection of sunlight off particles and dust in the solar system. Astronomers can study zodiacal light to map the distributions and possible origins of cosmic dust, revealing further insights about the processes happening in our solar system. Where is it? This image was taken at the CTIO facility, around 310 miles (500 km) north of Santiago, Chile at an elevation of 7,200 feet (2200 meters). Its location allows it to avoid light pollution from urban areas. Why is it amazing? As a major astronomical research facility, the CTIO hosts nearly 40 telescopes at it site, which offers exceptionally clear dark skies to peer deep into space. These telescopes are used for many different projects, from studying near-Earth asteroids to space debris to exoplanets. CTIO's mission is to provide world-class observing capabilities to the global astronomical community, supporting key discoveries while helping us to further understand more about our universe. Want to learn more? You can read more about telescopes based in Chile and night sky photography. Solve the daily Crossword