2.4, 5 or 6 GHz Wi-Fi: why walls change range, speed and stability
See how distance, walls, concrete floors, congestion and compatibility affect 2.4, 5 and 6 GHz Wi-Fi, and which band to test in each situation.
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There's Science Behind It explains phenomena, discoveries, and technologies through real situations, clear examples, and evidence that helps readers understand how the world works.
AlphaGenome Atlas: what predictions for 9 billion variants mean — and what they do not diagnose
Launched on September 8, 2026, the Atlas precomputes molecular effects for billions of single-letter DNA changes. Learn what AVI means, how researchers can use it and where the cli...
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Are bananas radioactive? What potassium-40 really means — and where the “banana equivalent” misleads
Bananas contain potassium-40 and therefore have measurable natural radioactivity. The “banana equivalent dose” helps visualize very small doses, but it should not be read as radiat...
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Chandra found 84 hypersoft X-ray sources: what they might be and the two mysteries they could illuminate
The study identifies 84 sources dominated by very low-energy X-rays. They may include different binaries and offer clues about Type Ia supernovae and galactic ionization.
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FLEX + Sentinel-3C: why they launch together and what each satellite will measure
Vega-C will carry FLEX and Sentinel-3C on the same flight. Learn the Brazil launch time, what FLORIS measures and how Sentinel-3C observes oceans, land, ice and atmosphere.
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NASA Eyes now lets you fly across all of Mars: how to use free-fly in your browser
The August Eyes on the Solar System update added full Mars terrain. Learn how to activate free-fly, use its controls, and understand what changes beyond desktop.
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Separation is not arrival: when BepiColombo enters orbit around Mercury
MTM separation on September 3 started the arrival phase. See what happens on November 21, December 9–10 and through the start of science in April 2027.
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Saturn has a south-polar decagon: what Hubble found and how it differs from the northern hexagon
Hubble revealed a ten-sided atmospheric wave at Saturn’s south pole. Here is what was observed, how it differs from the northern hexagon and what remains uncertain.
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Roman Space Telescope has launched: what happens during its three-month commissioning and when the first images arrive
Roman is already on its way to L2. Learn what tests, activations, and calibrations come next and why NASA expects the first images in early 2027.
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Why Motion Assist bubbles may reduce car sickness: the science behind the screen cues
Motion Assist bubbles try to align what the eyes see with the motion detected by the inner ear. Learn how sensory conflict works, what the evidence says, and where the limits are.
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Roman vs. Hubble: how the same-size mirror photographs about 100 times more sky
Roman and Hubble have 2.4 m mirrors, yet Roman sees a much larger area per exposure. Learn how focal length, optical design, and the WFI change the field of view.
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2026 Orionid meteor shower in Brazil: best time, Moon impact and realistic meteor counts
The peak comes on the night of October 21–22. See how the waxing gibbous Moon shortens the useful window, when to watch and why 10–20 meteors per hour is not a promise.
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Saturn at opposition on October 4, 2026: how to observe it from Brazil and what changes in brightness and the rings
On October 4, Saturn reaches opposition: it stays visible for nearly the entire night and climbs high in the Brazilian sky. See where to look and what each type of equipment shows.
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Phone stops charging at 80%: when it is battery protection and when it may be a problem
If your phone gets stuck near 80%, the cause may be a charge limit, adaptive optimization, heat protection, or a fault. See how to tell each case apart.
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How the cell phone calculates the battery percentage and why it sometimes skips or is wrong
Battery percentage is an estimate that combines current, voltage, temperature and aging. Understand why the number may freeze, jump or reach shutdown before 0%.
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Swollen cell phone battery: how to recognize it, why it happens and why to stop using it
Screen or lid lifting may indicate a swollen battery. Understand why this happens, what signs to watch for and why use should be stopped.
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Why wireless charging heats up your phone - and what alignment, case and Qi2 change
Wireless charging always involves losses. Understand where heat originates, why misalignment worsens efficiency and how caps and Qi2 alter coupling.
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Why does a QR Code still work when torn or covered? What Error Correction Really Recovers
A QR Code tolerates some of the damage because it carries redundancy, but the correction does not reconstruct any part of the image: it recovers data within limits.
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Preprint, peer review and published article: what changes the trust you should give to research?
Preprint, peer review and publication are not real seals. See what each stage adds and how to check the version, journal, corrections and retractions.
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Why does water boil sooner at altitude but food takes longer to cook?
At altitude, lower atmospheric pressure reduces the boiling point of water. It may boil sooner, but it boils cooler - and this slows down the cooking process.
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How the induction cooker heats the pan without "turning on" the burner - and why not every pan works
The induction cooktop creates a variable magnetic field that heats the pan itself. Understand induced currents, the magnet test and why the glass still heats up.
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Where does the air conditioning water come from — and when is dripping normal or a sign of a problem?
The water in air conditioning comes from the humidity in the air itself. Understand condensation in the evaporator and how to differentiate normal drain from an internal leak.
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Why does noise cancellation erase the plane's rumble, but let voices and sudden sounds through?
ANC works best against continuous and low-pitched noise. Understand how anti-noise, delay, frequency, sealing, and microphones explain why voices and impacts still get through.
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Can earthquakes be predicted? The difference between prediction, probability, detection and early warning
Science still does not predict the exact moment of an earthquake. Understand what probabilities, seismic detection, and early warnings really can tell you.
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How the touch screen detects your finger - and why gloves and water change the result
The capacitive screen measures tiny changes in the capacitance of a grid of sensors. Gloves reduce the signal, while water changes the pattern that the controller needs to interpre...
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Why Microwaves Can Take Down 2.4GHz Wi-Fi and What 5GHz, Distance, and Shielding Change
Microwaves and 2.4GHz Wi-Fi share a nearby radio band. Understand why crashes occur, when 5 GHz helps, and why it doesn't measure oven safety.
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Car glass fogged up inside or out: when using hot, cold air, A/C or cleaner
Find out which side the condensation is on and choose the right action: dry the air, heat the glass, reduce cooling or use the cleaner.
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Why do mosquitoes bite more people? What Smell, CO₂, Heat, Species, and Blood Type Really Explain
Mosquito attraction depends on combined cues. Skin odor weighs heavily, but CO₂, heat, vision and the species itself change who appears most attractive.
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Can a vacuum behave like a crystal near a magnetar? What IXPE measured and why it is not yet final proof
IXPE found a polarization pattern in magnetar 1E 1547.0−5408 compatible with vacuum birefringence, but data is still lacking for definitive confirmation.
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What happens to location in airplane mode: GPS, offline maps and auxiliary networks
Airplane mode doesn't mean location is off: GPS, maps, routes, and live data depend on different sources. See what continues to work offline.
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Why a fan cools you without cooling the room — and what humidity changes
The fan does not lower the room temperature: it accelerates the loss of body heat. Humidity interferes because it limits the evaporation of sweat.
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How do scientists decide a species is extinct without looking everywhere?
Scientists don't need to look everywhere: they combine appropriate searches, detectability, habitat, historical records, and threats to measure extinction uncertainty.
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Mars’ “sea of beehives”: what Valle Grande’s fractures can reveal — and why its origin is still uncertain
Curiosity found an extensive field of 4 to 8 cm polygonal fractures in Valle Grande. The shape resembles beehives, but the origin is still under investigation.
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Why does the Moon appear huge on the horizon if the photograph shows it to be almost the same size?
The Moon appears larger on the horizon due to an illusion of perception. Photographs with the same focal length show that its diameter changes very little.
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Why GPS makes mistakes inside buildings and how your cell phone still tries to locate you
Inside buildings, GPS loses accuracy because walls block and reflect signals. The cell phone compensates by using Wi-Fi, mobile network, Bluetooth and sensors.
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ExoMars Tested Landing Pad Legs: Why This Mechanism Matters for the Rosalind Franklin Mission
On August 6, ESA showed the legs of the ExoMars platform opening in pairs. Understand how they absorb impact, detect the ground and help stabilize the landing.
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SkyFall: Why NASA wants three helicopters on Mars with ultralight radar and antenna to search for ice
NASA tested a 150-gram antenna for SkyFall's radar, which envisions three helicopters to map shallow ice on Mars. The mission is still under development.
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Plasma swirls were seen on the Sun in unprecedented resolution: what they can — and still can't — explain about the solar corona
Inouye resolved plasma swirls tens of kilometers wide in the solar photosphere. They reveal predicted instability, but do not prove how the corona is heated.
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Perseids and eclipse on August 12: what will be visible from Brazil — and what will not be
On August 12, 2026, the total eclipse will not be seen in Brazilian cities. The Perseids may appear, especially in the North and Northeast, with clear and dark skies.
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Earth disappeared behind Phobos: what Perseverance really recorded
Viewed from Mars, Earth became a dot about a pixel long and disappeared behind Phobos. Understand why the phenomenon was an occultation, not an eclipse.
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Falcon 9 stage should have reached the Moon on August 5: what is known
Tracking indicates that a Falcon 9 upper stage reached the Moon on August 5, but visual confirmation depends on orbital images of the site.
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The Helix Nebula’s “cometary knots” are not comets: what Webb reveals
Webb image reveals thousands of knots of gas and dust in the Helix Nebula. They resemble comets, but belong to the matter expelled by a star.
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How Scientists Estimate Millions of Insect Species Without Counting One by One
Science didn't count millions of insects one by one: it combined traps, DNA, undetected species and extrapolations. Understand the method and its limits.
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A meteor ‘photobombed’ a nebula: what the photo really records
The NASA image brings together a meteor in the atmosphere and the Sh2-126 nebula, about 1,200 light years away. Understand perspective, scale and long exposure.
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Barnes Ice Cap Almost Snowless in July 2026: What the Satellite Shows
Landsat 9 image reveals nearly snow-free Barnes Ice Cap in July 2026. See how to interpret ice, meltwater, channels, and scene boundaries.
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What you can really see in the Brazilian sky in August 2026
See which astronomical events in August 2026 will actually be visible from Brazil, with times, best regions and observation precautions.
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The true impact of the 2026 “Super El Niño” on your life
El Niño is already underway in 2026 and could become very strong. Understand the real effects on heat, rain, health, water, food and routine.
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