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Rare smiley face will light up Pittsburgh-area sky on Friday morning

Rare smiley face will light up Pittsburgh-area sky on Friday morning

CBS News24-04-2025

The moon, Saturn and Venus will create a rare smiley face in the sky later this week.
Sometimes things line up in fun ways. That is set to happen early Friday morning in the night sky as the moon, Venus and Saturn will line up to create what will look like a smiley face.
A Smile in the Sky is expected on April 25.
Credit: Getty Images
Venus and Saturn will be in just the correct spot in their revolution around the sun to match up with the waning crescent moon, making the smiley face appear.
When will the smiley face in the sky be visible?
Everything is expected to line up Friday morning around 5:30 a.m.
If you are lucky enough to see it, you will need to tilt your head or rotate the photo a bit to make this truly look like a smile. The rare event will be visible to the naked eye, but a pair of binoculars or a telescope will enhance the view.
A Smile in the Sky is expected on April 25.
Credit: Getty Images
Weather forecast for Friday's smiley face in the sky
With rain approaching Western Pennsylvania, KDKA First Alert Meteorologist Ray Petelin is not sure the weather will want to cooperate, which will make for many frowns on Earth.
Celestial events in 2025
Friday's alignment is the latest celestial event this year. The Lyrid meteor shower peaked overnight Monday into Tuesday morning, while March featured a total lunar eclipse, a Blood Moon and a partial solar eclipse.
Later this year, the Perseid meteor shower will peak between Aug. 12 and Aug. 13. NASA calls it the "best meteor shower of the year."

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Dozens of NASA space missions could be axed under Trump's budget: Here's a look at 6
Dozens of NASA space missions could be axed under Trump's budget: Here's a look at 6

USA Today

time2 hours ago

  • USA Today

Dozens of NASA space missions could be axed under Trump's budget: Here's a look at 6

Dozens of NASA space missions could be axed under Trump's budget: Here's a look at 6 The budget request proposes slashing NASA funding by nearly 25% mostly by eliminating a significant portion of the agency's science portfolio. Show Caption Hide Caption Trump calls Elon Musk a 'fantastic guy' amid drug use allegations President Trump said he didn't know about Elon Musk's alleged drug use and backed the billionaire's cost-cutting. A total of 41 science projects would get the ax under the proposal, which would be NASA's biggest single-year cut in the agency's history, according to the Planetary Society. Many of the science missions President Donald Trump looks to cancel are still in development, while others are extended operations with uncrewed vehicles already deployed to orbit. Here's a look at six different types of space missions, from Mars exploration to future moon landings, that could be under threat if Trump's budget were to go into effect. Dozens of NASA's missions to explore the cosmos could be in jeopardy under a budget proposal from the White House. President Donald Trump's administration, which released an initial budget proposal May 2 for the U.S. space agency, dropped more details Friday, May 30 about just which NASA programs it looks to cancel. All told, the budget request for the next fiscal year proposes slashing NASA funding by nearly 25% – from $24.8 billion to $18.8 billion – mostly by eliminating a significant portion of the agency's science portfolio. Trump's proposal, which would need congressional approval, has been lauded by acting NASA Administrator Janet Petro for "still prioritizing critical science and technology research," she said in a statement. But in its own statement, the Planetary Society called the proposed budget "an extinction-level event for the space agency's most productive, successful, and broadly supported activity: science." A total of 41 science projects would get the ax under the proposal, which would be NASA's biggest single-year cut in the agency's history, according to the Planetary Society, a nonprofit space exploration advocacy organization. Many of the science missions Trump looks to cancel are still in development, while others are extended operations with uncrewed vehicles already deployed to orbit. Here's a look at six different types of space missions, from Mars exploration to future moon landings, that could be under threat if Trump's budget were to go into effect. Mars missions: Mars Sample Return, orbiters For years, NASA's Mars Sample Return mission has sought to bring back a collection of rocks that could reveal details about potential past life on the Red Planet. The agency's Perseverance rover has been scooping up and storing intriguing rock samples since it first landed in 2021 in the Jezero Crater. But ballooning costs and mission delays have hampered both NASA and the European Space Agency in executing a plan to actually retrieve and transport the samples to Earth for scientists to study further. Meanwhile, Mars Odyssey and MAVEN are two spacecrafts that have been orbiting Mars for years. While those missions could be eliminated, Trump looks to inject another $1 billion to tap the private sector to help lay the groundwork for future Mars exploration. That includes establishing a new NASA initiative called the Commercial Mars Payload Services Program (CMPS). The program would operate similar to NASA's Commercial Lunar Payload Services program by awarding contracts to private companies that would develop spacesuits, vehicles and other technology aimed at reaching the Red Planet. Outer solar system: New Horizons, Juno The New Horizons spacecraft became the first spacecraft to explore Pluto up close when it flew by the dwarf planet and its moons on July 14, 2015. In 2019, the space probe reached the Kuiper belt – a doughnut-shaped region of icy bodies extending far beyond the orbit of Neptune – where it continues to make discoveries about the outer solar system. The Juno probe, meanwhile, continues to reveal new insights into the gas giant Jupiter and its Jovian moons nine years after arriving in 2016. The spacecraft recently relayed data unmasking the harsh environments of both Jupiter and its volcanic moon Io. Moon missions: Space Launch System (SLS) rocket and Orion capsule NASA's Space Launch System rocket and Orion space capsule – both seen as centerpieces in the effort to return Americans to the moon – may have their days numbered. The SLS and Orion, which have both launched just once on an uncrewed mission in 2022 from the Kennedy Space Center in Cape Canaveral, Florida, are due to play a role in NASA's lunar ambitions under the Artemis campaign. But Trump seeks to phase out both the SLS and the Orion after just two more missions. 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In space, no one can hear you scream — But it still gets incredibly noisy
In space, no one can hear you scream — But it still gets incredibly noisy

Yahoo

time2 hours ago

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In space, no one can hear you scream — But it still gets incredibly noisy

You've probably heard astronauts talking to mission control while they perform operations in space. In these recordings, you can hear the back-and-forth chatter, along with the astronaut's breathing and the background noise of their spacesuit pumping oxygen into their helmet to keep them alive. Yet, if they removed that helmet and broke the barrier of the suit shielding them from outer space, that conversation would be cut — and all sound would go radio silent. As astrophysicist Neil DeGrasse Tyson once explained on the podcast StarTalk, astronauts would be able to hear things from within the body itself — like their own heartbeat. 'The sound of silence is the sound of things that were always making noise that you never noticed before,' he said on the podcast. Sound waves are a vibration carried through some sort of medium, like air or water or in the case of the heartbeat, the body. When those vibrations reach our ears, they send a vibration through our eardrums, which is recognized in the brain as sound. Because sound needs something to travel through, it can't make its way through the vast majority of space, which is a vacuum containing essentially no particles. Interplanetary space contains just a few dozen particles in each cubic centimeter — in comparison, the air we breathe has tens of quintillions of molecules per cubic centimeter. (For scale, 10 quintillion seconds is longer than the age of the universe.) 'In the universe, an absolute vacuum is rare, and most of the universe is very low-density high-temperature plasma,' said Chris Impey, an astronomer at the University of Arizona. 'In principle, sound could travel through that, but it would have very different properties to what we are used to.' Gas clouds, dust clouds and solar winds for example, could all have sound waves pass through them, even if they are relatively low-density, said Phil Plait, an astronomer who runs The Bad Astronomy blog. The structures of many gas clouds, for example, can be formed by sound waves, or shock waves in the case that the material moves faster than the speed of sound, he explained. 'We see the effects of sound in these objects all the time,' Plait told Salon in an email. This would be nothing like the sound we are used to on Earth and wouldn't be detectable by the human ear, which can only hear a very narrow range of frequencies. You may remember the black hole in the Perseus galaxy cluster about 250 million light-years away, from which NASA detected emanating pressure waves in 2003. Although this was not a sound recording like you would hear from a microphone, NASA did convert these pressure waves into sound, albeit one that is far too low of a frequency for the human ear to detect. For what it's worth, though, they did find that the waves corresponded to the note of B-flat, about 57 octaves below the middle C note on a piano. Then, in 2022, NASA's Chandra X-ray Observatory sonified this wave data into a couple of sounds the human ear could hear at frequencies 144 quadrillion and 288 quadrillion times higher than the original. (To get a sense of just how astronomical this figure is, one study estimated that there are 20 quadrillion total ants on Earth.)"What's going on is that matter is surrounding the black hole, and when some stuff falls in it can create a powerful wind that compresses the material around it, making a sound wave,' Plait said. 'We don't detect the sound itself, but we can see the ripples in the gas and they can be converted into sound we hear.' There are entire projects dedicated to sonifying data from astronomical objects. In the Cassini mission, for example, NASA detected radio waves emitted from charged particles in magnetic fields, which were converted to sound. Still, these were plasma waves, and not sound waves. However, sound has been detected within our own solar system. During NASA's Perseverance mission on Mars in 2021, the rover's microphones detected the whir of the mission's helicopter and noises created by the rover. It also detected naturally occurring sounds on the planet itself — including Martian wind. Back in 1981, Russia also reported sounds on Venus during the Soviet Venera 13 mission, which sounds like waves hissing on a beach. Yet sounds on other planets sound different than they do on Earth because other planets have different atmospheres. On Earth, the unique combination of oxygen, nitrogen and other gases, combined with the effects of gravity and solar heating, create a certain density of molecules that carries sound as we know it. In contrast, the atmosphere on Mars is roughly 2% as dense as Earth's, and its composition is dominated by carbon dioxide. Overall, sounds would be quieter and slightly muffled, and it would also take longer to reach you than it would on Earth. Some higher pitched sounds would be inaudible entirely. Interestingly, if you played a church organ on Mars, the set of flue pipes that create sound in a way similar to a flute would go up in pitch, but the reed pipes, which produce sound in a way similar to a saxophone, would go down in pitch, said Tim Leighton, an acoustics professor at University of Southampton, who created models to predict sound on other planets. Saturn's moon, Titan, is probably acoustically the closest to Earth. However, the pressure and density are a bit higher at ground level, and the speed at which sound travels through the atmosphere is lower than Earth. As a result, many sounds such as voices, flutes and organ pipes would play at a lower pitch, Leighton said. On Venus, sounds that are caused by solid objects vibrating, like harmonicas or reed organ pipes, would be pitched down because the atmosphere is dense and soupy. However, sounds from things like flue organ pipes or flutes, which are propagated through air, would be pitched higher than Earth. That's because the extremely hot temperatures on Venus make sound travel faster than on Earth. Additionally, if we theoretically heard a sound like a vocalization on Venus, our perception of the size of the creature it was coming from would be a little distorted. That's because humans evolutionarily developed a way of hearing vocalizations in which sound travels to the top of the nose of the speaker and back again in a form of echo, which we subconsciously use to estimate how large a creature is based on the tone they emit, Leighton said. On Venus, "this pulse quickly travels up to the top of the nose and back again much sooner than it would on Earth,' Leighton told Salon in a video call. 'Your brain hears that and imagines the person is about three feet tall.' As we continue exploring more distant planets, recording sound could help scientists better understand them. For example, measuring the sounds of wind on Mars could provide clues on how the planet's surface forms, Leighton explained. 'It can tell us a lot about the atmosphere and how it changes as the sun goes up and down, and how that, in turn generates winds to shape the surface of Mars,' Leighton said. 'That indicates the power of these microphones.' Sound could also help us explore planets like Jupiter and Saturn, which likely have plenty of sound to hear but have thick clouds and inhospitable conditions that make it difficult to access visually, Impey said. 'In fact, since the atmosphere is sort of opaque and you can't really see through it, it might be a way to sense what's happening better and more efficiently than you could with any sort of a camera, which wouldn't really work very well at all,' he told Salon in a phone interview. When looking for sound in the universe, astronomers have also looked back in time. Back in the early years of the universe, it was a hot plasma soup that was far more dense. That plasma carried acoustic oscillations, although still not at an audible range. However, in one research project, astronomer Mark Whittle compressed the first million years of the universe into 10 seconds, shifted up by 50 octaves so that the human ear could hear. It sounds like "a descending scream, a deep roar and a final growing hiss," he reported. About 400,000 years after the Big Bang, sound waves called Baryon acoustic oscillations rippled through the cosmos to influence how galaxies were distributed. As such, one could say that life on Earth as we know it in some way originated from a sound wave. It's not called the Big Bang for nothing, after all. 'Within that sea of brilliance, the seeds for all that we now know were already present, latent, waiting to unfold,' Whittle wrote in his report. 'Most remarkable of all, perhaps, these seeds were sounds – pressure waves coursing through the fluid.'

Measles Is Now Showing Up in Wastewater
Measles Is Now Showing Up in Wastewater

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Measles Is Now Showing Up in Wastewater

Credit - Getty Images Measles cases in the U.S. have been rare in recent decades, thanks to a strong childhood vaccination program. But a few cases inevitably pop up each year as travelers bring the virus in from other countries and infect unvaccinated people, primarily children. Those cases are no longer blips. Now that the measles vaccination rate is dropping precipitously across the U.S.—due in part to anti-vaccine sentiments—cases are rising. So far in 2025, 14 outbreaks have been reported in 33 states, according to the U.S. Centers for Disease Control and Prevention (CDC). (By comparison, in 2024, there were just 16 outbreaks reported during the entire year.) Scientists may now have a new way to catch cases. For the first time, researchers have posted national information on where the measles virus is showing up in wastewater. Wastewater surveillance is a useful public-health tool because it provides an objective glimpse into where a given virus is causing infections—often before traditional testing methods. For viruses like measles, which infected people shed in urine, feces, or saliva, it can provide a critical heads-up for health officials. 'It gives us a finger-to-the-wind weather map of what is happening with infectious diseases,' says Dr. Marlene Wolf, assistant professor at Emory and principal investigator and co-program director of WastewaterSCAN, an academic and commercial group that includes researchers from Stanford University, Emory University, and Verily (which is Alphabet Inc.'s research organization). Here's what wastewater is revealing about measles in the U.S. WastewaterSCAN began testing sewage in the U.S. for the COVID-19 virus in 2020 and has since added other disease-causing microbes including influenza, RSV, human metapneumovirus (HMPV), norovirus, enterovirus, mpox, Candida auris, and hepatitis A. This spring, the scientists began developing a test for picking up signs of the active or "wild type" measles virus that is causing outbreaks in the U.S. The test uses samples from nearly 150 sewage sites across the country and can pick up signs of measles within 48 hours. Read More: What to Know About the New COVID-19 Variant NB.1.8.1 So far, they have detected it in three sites: one day in Hollywood, Md.; four days toward the end of May in Sacramento; and twice in mid-May in Stamford, Conn. WastewaterSCAN is only one such wastewater surveillance network in the country, though it's the first to test for measles on a national level. The CDC launched its National Wastewater Surveillance System in 2020 and includes more than 1,400 sites that cover 150 million Americans. Some state health departments—including in Texas, where the current measles outbreaks began—also test wastewater samples. WastewaterSCAN collaborates with the CDC, but the CDC does not yet test for measles in wastewater. Doctors who see patients with measles must report the case to the CDC so the agency can track it and respond to any outbreaks. But it takes time for people to develop symptoms, seek medical care, get tested, and then have their case reported if the test is positive. In addition, the first symptoms of measles are common ones like fever, runny nose, and cough—before the telltale rash appears. Plus, not everyone may get sick enough to know they have measles, so their cases may go unreported. Still others may get sick but not have access to health care and therefore never seek medical help. Read More: Measles Vaccination Rates Are Plummeting Across the U.S. Wastewater monitoring bypasses those hurdles and can theoretically catch evidence of the virus much earlier. That could be especially helpful with a highly contagious disease like measles, in which one infected person can quickly spread the virus to as many as 18 others. 'This is anonymous testing that combines everyone in a community,' says Wolfe. 'And for measles, it's likely that shedding [of the virus] into wastewater is happening before people necessarily recognize what they have.' This type of tracking for measles is too new to know yet whether it can detect cases in a region before people start testing positive, Wolfe says. But wastewater surveillance was able to pick up signs of the COVID-19 virus days or sometimes even weeks before cases began appearing in hospitals and testing labs. Over time, as more data are collected on measles, health experts can begin to look for trends and patterns, such as increases in the number of positive samples. That could help public-health departments focus resources like vaccines in areas where infections are spreading. If the number of positive samples start to decline, that information could also give them a heads up when infections are under control. Getting vaccinated is the best way to protect yourself against measles infection, and the immunization provides close to lifelong immunity. Making sure that anyone who is eligible is up to date on their measles vaccines can help them avoid infection. Contact us at letters@

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