Connect with us

Published

on

Since time immemorial, humans around the world have gazed up in wonder at the night sky. The starry night sky has not only inspired countless works of music, art, and poetry but has also played an important role in timekeeping, navigation and agricultural practices in many traditions.

For many cultures, the night sky, with its stars, planets and the Milky Way, is considered just as important a part of the natural environment as the forests, lakes and mountains below. Countless people around the world gaze at the night sky: not only amateur and professional astronomers, but also casual observers who enjoy looking up at the stars to contemplate our place in the cosmos.

However, the night sky is changing. Not only is ground-based light pollution increasing rapidly, but growing numbers of satellites and space debris in orbit around Earth are also impacting the night sky.

Earlier research showed that satellites and space debris may increase the overall brightness of the night sky. In a new paper in Nature Astronomy, my colleagues and I applied this knowledge to predicting the performance of a major astronomical sky survey. We found this phenomenon may make the survey 7.5 percent less efficient and US$21.8 million (roughly Rs. 180 crore) more expensive.

A brighter sky

As a cultural astronomer, I am interested in the role of the night sky in cultural traditions around the world. In particular, I am interested in how light pollution and increasing satellite numbers affect different communities.

The number of satellites in orbit is growing rapidly. Since 2019, the number of functional satellites in orbit has more than doubled to around 7,600. The increase is mostly due to SpaceX and other companies launching large groups of satellites to provide high-speed internet communications around the world.

By the end of this decade, we estimate, there may be 100,000 satellites in orbit around the Earth. Collisions that generate space debris are more likely as space fills with new satellites. Other sources of debris include the intentional destruction of satellites in space warfare tests.

Increasing numbers of satellites and space debris reflect ever more sunlight towards the night side of Earth. This will almost certainly change the appearance of the night sky and make it harder for astronomers to do research.

One way satellites impact astronomy is by appearing as moving points of light, which show up as streaks across astronomers’ images. Another is by increasing diffuse night sky brightness. This means all the satellites that are too dim or small to be seen individually, as well as all the small bits of space debris, still reflect sunlight, and their collective effect is to make the night sky appear less dark.

Hard times for astronomers

In our research, we present the first published calculations of the aggregate effects of satellites and space debris in low-Earth orbit on major ground-based astronomy research facilities.

We looked at the effect on the planned large-scale survey of the night sky to be carried out at the Vera Rubin Observatory starting in 2024. We found that, by 2030, reflected light from objects in low-Earth orbit will likely increase the diffuse background brightness for this survey by at least 7.5 percent compared to an unpolluted sky.

This would diminish the efficiency of this survey by 7.5 percent as well. Over the ten-year lifetime of the survey, we estimate this would add some $21.8 million (roughly Rs. 180 crore) to the total project cost.

Brighter night skies mean longer exposures through telescopes are needed to see distant objects in the cosmos. This will mean that for projects with a fixed amount of observing time, less science will be accomplished, and there will be increased competition for telescope access.

In addition, brighter night skies will also reduce the detection limits of sky surveys, and dimmer objects may not be detected, resulting in missed research opportunities.

Some astrophysical events are rare and if researchers are unable to view them when they occur, there might not be an opportunity to easily see a given event again during a survey’s operational period. One example of faint objects is near-Earth objects – comets and asteroids in orbits close to Earth. Brighter night skies make it more likely such potentially hazardous objects may remain undetected.

A dramatic and unprecedented transformation

Increases in diffuse night sky brightness will also change how we see the night sky with the unaided eye. As the human eye cannot resolve individual small objects as well as a telescope can, an increase in satellites and space debris will create an even greater increase in the apparent brightness of the night sky. (When using a telescope or binoculars, one would be able to make out more of the dimmer satellites individually.) The projected increase in night sky brightness will make it increasingly difficult to see fainter stars and the Milky Way, both of which are important in various cultural traditions. Unlike “ground-based” light pollution (which tends to be the worst near large cities and heavily populated areas), the changes to the sky will be visible from essentially everywhere on Earth’s surface.

Our models give us a conservative lower limit for a likely increase in night sky brightness. If numbers of satellites and space debris continue to grow at the expected rate, the impacts will be even more pronounced.

As we note in our paper, “we are witnessing a dramatic, fundamental, and perhaps semi-permanent transformation of the night sky without historical precedent and with limited oversight”. Such a transformation will have profound consequences for professional astronomy as well as for anyone who wishes to view an unpolluted night sky.


From smartphones with rollable displays or liquid cooling, to compact AR glasses and handsets that can be repaired easily by their owners, we discuss the best devices we’ve seen at MWC 2023 on Orbital, the Gadgets 360 podcast. Orbital is available on Spotify, Gaana, JioSaavn, Google Podcasts, Apple Podcasts, Amazon Music and wherever you get your podcasts.
Affiliate links may be automatically generated – see our ethics statement for details.

Continue Reading

Science

Solar Sail Spacecraft Could Boost Space Weather Warnings by Nearly 60 Minutes

Published

on

By

Solar Sail Spacecraft Could Boost Space Weather Warnings by Nearly 60 Minutes

A potential new solar sail-powered satellite mission is offering an extended early warning of extreme space weather events to safely shut down the most vulnerable pieces of our tech — without waiting for them to fail mid-activity and then figuring out why. Going far beyond Earth in the traditional sense of this type of satellite, the solar sail spacecraft would provide almost 20 more minutes of warning time (up to about 60 minutes total) before some very dangerous geomagnetic storms. These eruptions, called coronal mass ejections, cause space weather events that can disrupt satellites, damage power grids, and expose astronauts to cosmic radiation through the ability to ground high-altitude commercial flights. The better the predictions, the more time for critical systems to respond, so overall it is supposed to work out.

Solar Sail Mission SWIFT Aims to Boost Space Weather Forecasting from Beyond L1 Point

According to a report published by The Conversation and contributed to Space.com, the new SWIFT (Space Weather Investigation Frontier) mission will put a satellite with a lightweight solar sail on it out at 2.1 million kilometers from Earth, which is farther than the existing L1 Lagrange point where solar wind is monitored now. That might mean a longer warning — “lead” time, in space weather speak — which would give satellite operators more time to shield their satellites, prevent astronauts from being exposed to high radiation, and allow airlines to chart the safest ways for planes.

The new solar spacecraft, Solar Cruiser, stays in orbit by a balance created from the Sun’s gravity and solar photons bounced off a reflective sail. And far larger than previous sail missions like NASA’s NanoSail-D2 and JAXA’s IKAROS. This steers the satellite post-launch.

Solar Cruiser, part of the SWIFT constellation, will measure solar wind at several vantage points for better interplanetary space weather forecasting. Enquire for more economical on-ground space weather forecasts and missions such as SWIFT that help protect our planet from imploding due to solar emissions.

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.


Next BioShock Game Set for ‘Overhaul’ After 2K Shakes Up Studio Leadership: Report

Related Stories

Continue Reading

Science

NASA Data Shows Pluto’s Equator Is Lined with Towering Methane Ice Spires

Published

on

By

NASA Data Shows Pluto’s Equator Is Lined with Towering Methane Ice Spires

The skyscraper size of methane ice might cover around 60% of the equatorial region of Pluto, a larger area than astronomers actually estimated. This study was published on July 5, 2025 in the Journal of Geophysical Reserach. It was based on the data from NASA’s New Horizons spacecraft which captured close images of it around 10 years ago on July 14, 2025. Amid that flyby, the spacecraft located spires of methane ice, each is about 1000 feet tall.

Pluto’s Methane Spires Span Vast Equatorial Zone with Uncertain Pattern

As per NASA’s data they are separated to 4.4 miles in a shape which is somewhat parallel rows and form a geological feature which is called bladed terrain. The features seems to be larger and more spaced out verison of the penitentes of Earth which is a structure of water ice that creates a maximum of 9 feet. Almost the same structure was observed on Jupiter’s moon named Europa and also might be there on Mars.

Additional data collected at infrared frequencies signaled that the dwarf planet’s most of the region was methane rich, which shows that the spires are too. The results show that the bladed terrain of methane ice spires exists in a band that spans about 60% of the circumference of the planet.

Future Missions Needed to Confirm Pluto’s Mysterious Methane Landscape

This is equal to five times the width of the United States continental part, majority spotted on non-encounter hemispheres. However, it is still nort sure if the band is patchy or even. The band spans between 30 degrees south and north of the equator of Pluto.

Bladed terrain formation relies on methane’s long term cycle condensation and sublimation. These are controlled by the season of Pluto and its orbital variations. Straight evidence would be required to confirm the recent observations by the scientists. The most certain way to confirm the extension of bladed terrain into the dark side of Pluto is the future spacecraft mission.

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.


Boult Adopts New GoBoult Branding in India; Unveils New Logo



Poco Teases Arrival of New Smartphone; Poco M7 Plus India Launch Date, Price Range Tipped

Related Stories

Continue Reading

Science

Blue Origin’s NS-34 Mission Successfully Carries Global Crew

Published

on

By

Blue Origin’s NS-34 Mission Successfully Carries Global Crew

Blue Origin sent crypto billionaire with five people for finding frontier on August 3, 2025. This mission is known for NS-34, as it was the 34th flight by Blue Origin’s New Shephard vehicle. It was lifted from the West Texas spaceport at 8:43 a.m. EDT. NS-34 passenger was Justin Sun, founded blockchain platform Tron and is a billionaire. There was a scheduling conflict which kept Sun from joining the flight that took place on July 20, 2021. That day the passengers were Jeff Bezos, Mark, Wally Funk and Oliver Daemen.

A Diverse Global Crew Marks Blue Origin’s 14th Crewed Mission

According to report by Space.com, on Sunday, the crew consist of Arvinder, an India native American real estate adventurer and investor; a businessman Gokhan Erdem, a journalist and meterologist Lionel Pitchfor, a photographer Deborah Martorell, and an entrepreneur James Russell. It was great to see different nations representing their flight, said by Phil Joyce, senior Vice President of Blue Origin.

All the six of them were rookies of spaceflight except for Russell, who flew on NS-28 mission during November 2024. It was the 14th human spaceflight which includes a rocket topped by a crew capsule. Both the elements are reusable, and the rocket comes back just like the SpaceX’s Falcon 9 rockets and the capsule lands softly.

Each flight of New Shepard lasts for 10 to 12 minutes from the liftoff to capsule touchdown. Amidst, brieftime, the passengers remain above the Karman line at a height of 62 miles demarcation widely which is regarded as the nexus from where the space starts, and then it experiences weightlessness of a few minutes.

From Billionaire Seats to STEAM Dreams

Blue Origin has not shown the ticket prices, so there is no idea how much penny the folks have paid for this ride. However, it is safer to say that it was considerably less than the Sun went in the year 2021. That amount was a philanthropic contribution as per Blue Origin. Further, from $28 million bid 19 space focused charities were benefitted and inspired future generations to make careers in STEAM and shape up their future in space.

Continue Reading

Trending