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Try these stargazing apps to spot constellations and more.

These astronomical maps will help you spot planets, stars and constellations in the night sky.

Stargazing with a friend or partner is a relaxing nighttime activity. But if you’re wanting to relax under dark skies and look at the stars, how will you know where to look? Or what you’re seeing? If you want to check out the celestial bodies and star clusters visible in a clear night sky, you should consider downloading a stargazing app. The best stargazing apps can give you a better map of the sky and more details about what you’re seeing.

My husband and I are far enough out in the country to see stars, but we haven’t completely escaped the city’s light pollution. Every so often before we turn in for the night, we’ll step out onto the back porch if the sky is clear, and look up. We’ve seen a shockingly bright Venus, the ISS streak by and a few shooting stars — thanks in part to help from some astronomy apps. If you want to take a look at some of the best stargazing app options, read on. These apps should help you spot planets, stars and constellations — and some of them have a free version.

Read more: Best Weather Apps of 2023

Google Sky/Screenshot by Shelby Brown/CNET

Google Sky lets you explore the reaches of space through the «eyes» of the Hubble Space Telescope, the Sloan Digital Sky Survey and the Digitized Sky Survey. You can explore the wealth of information available free on mobile or desktop. 

Click through the tray at the bottom of the screen to learn more about the solar system, constellations, galaxies and nebulae, views of the universe in X-ray, ultraviolet and infrared. You can also use sliding bars to see drawings of the sky by Giovanni Maria Cassini.

Plus, find where the planets are in the sky at a given time by typing the name of a planet in the search box. 

SkySafari/Screenshot by Shelby Brown/CNET

The SkySafari astronomy app, which starts at $2 on iOS and free on Android, lets you hold your phone to the sky to identify planets, constellations, stars and satellites. You can also use the app to see what the sky might’ve looked like thousands of years ago, or what it will look like in the future.

Simulate past meteor showers, approaching comets and celestial events, like eclipses. SkySafari also has a constellation illustration overlay feature in case you can’t quite visualize the lion or bear that everyone else claims to see. The app also offers history, mythology and science information to accompany the images.

If you’re not sure where to get started, you can tap Tonight’s Best in the app to check out which object in the sky you could get the best look at.

StarTracker/Screenshot by Shelby Brown/CNET

The Star Tracker app works on iOS (lite) and Android to show you 88 constellations, over 8,000 and deep-sky objects, and the sun, moon and planets, all in real time. The app uses a 3D compass in AR mode that indicates the position of objects you’ve searched for. Think of it as a mobile planetarium.

To enhance constellations, Star Tracker has a graphics feature for the 12 zodiac signs and six famous deep-sky objects. 

The app is free, but there’s a full version with more features for $3 and a no ads version for $1. In addition, Star Tracker Pro offers a Time Machine feature and night mode. 

Screenshot/CNET

The International Space Station (ISS) app, available free on iOS and Android, doesn’t technically show you stars, but you can check out planets and the ISS itself. The app tracks where the in-space laboratory is currently located above the world at any given time.  

Once you plug in your location — the only permission the app asks for — it can tell you how often you can expect to see the ISS in the sky. For example, residents of Louisville, Kentucky will typically be able to see the ISS between about 7:57 p.m. and 9:37 p.m. each night for about 30 seconds to a minute and a half. It’s a fleeting window — the ISS is traveling at about 17,100 miles per hour.

The app also keeps track of how long until the ISS will pass over your location again, and how long it’ll be visible. On average, it looks like the ISS is visible in a given area one to two times per day over the course of a week. 

Skyview/Screenshot by Shelby Brown/CNET

The Skyview app is $3 on iOS and $2 on Android, but both platforms have a free lite version. To use Skyview, just point your device at the sky and you can get started identifying galaxies, stars, constellations, planets — even the International Space Station. The app has night mode and an AR feature, so you can use it comfortably any time. 

The app’s Sky Path’s feature lets you track objects in space to see exact locations at any date and time. In addition, Skyview has a time travel option to observe what the sky looked like in the past and might look like in the future. 

NASA/Screenshot by Shelby Brown/CNET

No at-home space adventure is complete without the free official NASA app, which you can download for iOS or Android. Although technically you can’t use the app for stargazing in the same vein as some of the others on this list, you can still get up close and personal with space.

Check out a photo library with thousands of images constantly being updated and watch live NASA TV. In addition, the app has on-demand videos from around the agency and live streaming from the High-Definition Earth Viewing experiment on the ISS.

The app also keeps you in the know about NASA missions, launch information, upcoming sightings, news and tweets from the agency. 

Star Walk 2/Screenshot by Shelby Brown/CNET

Star Walk 2, $3 for iOS and free for Android with in-app purchases, uses your phone’s sensors and GPS to show you a map of the night sky in real time, pinpointing the location of stars, planets, constellations, comets, the ISS and satellites.

Like SkySafari, you can tap Visible Tonight if you’re not sure where to start. The feature will tell you all upcoming astronomical events and celestial objects visible for your location. The What’s New section will also keep you posted on upcoming events. You can also view the astronomy calendar or tap the clock-face icon to select any date and time and watch the sky of different periods.

Spectacular ISS shots of cities at night (pictures)

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iOS 17 Cheat Sheet: Your Questions on the iPhone Update Answered

Here’s what you need to know about new features and upcoming updates for your iPhone.

Apple’s iOS 17 was released in September, shortly after the company held its Wonderlust event, where the tech giant announced the new iPhone 15 lineup, the Apple Watch Series 9 and the Apple Watch Ultra 2. We put together this cheat sheet to help you learn about and use the new features in iOS 17. It’ll also help you keep track of the subsequent iOS 17 updates.

iOS 17 updates

Using iOS 17

Getting started with iOS 17

Make sure to check back periodically for more iOS 17 tips and how to use new features as Apple releases more updates.

17 Hidden iOS 17 Features You Should Definitely Know About

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Technologies

Get Ready for a Striking Aurora That Could Also Disrupt Radio Communications

Don’t expect the storm to cause a lingering problem, though.

A geomagnetic storm is threatening radio communications Monday night, but that doesn’t mean you should be concerned. In fact, it may be an opportunity to see a colorful aurora in the night sky.

The National Oceanic and Atmospheric Administration has issued a geomagnetic storm watch after witnessing a coronal mass ejection from the sun on Saturday. The watch, which was issued over the weekend and will expire after Monday, said the onset of the storm passing over Earth on Sunday night represented a «moderate» threat to communications. As the storm continues to pass through, it could deliver a «strong» threat on Monday night that could cause radio communications to be temporarily disrupted during the worst of it.

Even so, NOAA said, «the general public should not be concerned.»

A coronal mass ejection occurs when magnetic field and plasma mass are violently expelled from the sun’s corona, or the outermost portion of the sun’s atmosphere. In the vast majority of cases, the ejection occurs with no real threat to Earth. However, in the event the ejection happens in the planet’s direction, a geomagnetic storm occurs, and the Earth’s magnetic field is temporarily affected.

In most cases, geomagnetic storms cause little to no disruption on Earth, with radio communications and satellites affected most often. In extreme cases, a geomagnetic storm can cause significant and potentially life-threatening power outages — a prospect that, luckily, the planet hasn’t faced.

Switching poles

Every 11 years, the sun’s magnetic poles switch, with the north pole and south pole swapping positions. During those cycles, the sun’s activity ramps up as it gets closer to pole-switching time. The height of its activity is called solar maximum, and scientists believe we either may be entering the solar maximum or may be already in it.

During periods of heightened solar activity, sunspots increase on the sun and there’s an increase in coronal mass ejections, among other phenomena. According to NOAA, solar maximum could extend into October of this year before the sun’s activity calms and it works towards its less-active phase, solar minimum.

Even when geomagnetic storms hit Earth and disrupt communications, the effects are usually short-lived. Those most affected, including power grid operators and pilots and air traffic controllers communicating over long distances, have fail-safe technologies and backup communications to ensure operational continuity.

But geomagnetic storms aren’t only about radios. In most cases, they also present unique opportunities to see auroras in the night sky. When the storms hit, the plasma they carry creates a jaw-dropping aurora, illuminating the night sky with brilliant colors. Those auroras can be especially pronounced during the most intense phases of the storm, making for nice stargazing.

If you’re interested in seeing the aurora, you’ll need to be ready. The NOAA said the «brunt of the storm has passed» and even if it lingers into Tuesday, there won’t be much to see after Monday night. 

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Technologies

Last Total Solar Eclipse for 20 Years Is Coming: How to See and Photograph It

It’s your last chance until 2044.

Get your eclipse glasses ready, Skygazers: the Great American Eclipse is on its way. On April 8, there’ll be a total eclipse over North America, the last one until 2044.

A total solar eclipse happens when the moon passes between the Earth and the sun, blocking the sun and turning an otherwise sunny day to darkness for a short period of time. Depending on the angle at which you’re viewing the eclipse, you may see the sun completely shrouded by the moon (called totality) or some variation of it. The more off-angle you are and the further you are from the path of the eclipse, the less likely you’ll be to see the totality.

The 2024 total solar eclipse will happen on Monday, April 8. The Great American Eclipse will reach the Mexican Pacific coast at 11:07 a.m. PT (2:07 p.m. ET), and then traverse the US in a northeasterly direction from Texas to Maine, and on into easternmost Canada. If you want a good look at it, but don’t live in the path of totality, you shouldn’t wait much longer to book accommodation and travel to a spot on the path.

Or how about booking a seat in the sky? Delta Airlines made headlines for offering a flight that allows you to see the entire path of totality. Its first eclipse flight, from Austin, Texas, to Detroit sold out quickly. But as of Monday, Delta has added a second flight from Dallas to Detroit, which also covers the path of totality. The airline also has five flights that will offer prime eclipse viewing.

Not everyone can get on one of those elusive eclipse-viewing flights. Here’s a look at other options to nab a chance to see this rare sight and what to know about it.

Total solar eclipse path

The eclipse will cross over the Pacific coast of Mexico and head northeast over mainland Mexico. The eclipse will then make its way over San Antonio at approximately 2:30 p.m. ET on April 8 and move through Texas, over the southeastern part of Oklahoma and northern Arkansas by 2:50 p.m. ET.

By 3 p.m. ET, the eclipse will be over southern Illinois, and just 5 minutes later, will be traveling over Indianapolis. Folks in northwestern Ohio will be treated to the eclipse by 3:15 p.m. ET, and it will then travel over Lake Erie and Buffalo, New York, by 3:20 p.m. ET. Over the next 10 minutes, the eclipse will be seen over northern New York state, then over Vermont. By 3:35 p.m. ET, the eclipse will work its way into Canada and off the Eastern coast of North America.

Best places to watch the Great American Eclipse

When evaluating the best places to watch this year’s total eclipse, you’ll first want to determine where you’ll have the best angle to see the totality. The farther off-angle you are — in other words, the farther north or south of the eclipse’s path — the less of an impact you can expect.

Therefore, if you want to have the best chance of experiencing the eclipse, you’ll want to be in its path. As of this writing, most of the cities in the eclipse’s path have some hotel availability, but recent reports have suggested that rooms are booking up. And as more rooms are booked, prices are going up.

So if you want to be in the eclipse’s path, and need a hotel to do it, move fast. And Delta’s eclipse-viewing flight from Dallas to Detroit has just four seats left at the time of publication.

Eclipse eye safety and photography

 
As with any solar eclipse, it’s critical you keep eye safety in mind.

During the eclipse, and especially during the periods before and after totality, don’t look directly at the sun without special eye protection. Also, be sure not to look at the sun through a camera (including the camera on your phone), binoculars, a telescope or any other viewing device. This could cause serious eye injury. Sunglasses aren’t enough to protect your eyes from damage.

If you want to view the eclipse, you’ll instead need solar viewing glasses that comply with the ISO 12312-2 safety standard. Anything that doesn’t meet that standard or greater won’t be dark enough to protect your eyes. Want to get them for free? If you’ve got a Warby Parker eyeglasses store nearby, the company is giving away free, ISO-certified solar eclipse glasses at all of its stores from April 1 until the eclipse, while supplies last.

If you don’t have eclipse viewing glasses handy, you can instead use indirect methods for viewing the eclipse, like a pinhole projector.

Read more: A Photographer’s Adventure With the Eclipse

In the event you want to take pictures of the eclipse, attach a certified solar filter to your camera. Doing so will protect your eyes and allow you to take photos while you view the eclipse through your lens.

There’s also a new app to help you both protect your eyes and take better photos of the eclipse on your phone. Solar Snap, designed by a former Hubble Space Telescope astronomer, comes with a Solar Snap camera filter that attaches to the back of an iPhone or Android phone, along with solar eclipse glasses for protecting your eyesight during the event. After you attach the filter to your phone, you can use the free Solar Snap Eclipse app to zoom in on the eclipse, adjust exposure and other camera settings, and ultimately take better shots of the eclipse.

2024 eclipse compared to 2017

The last total solar eclipse occurred in 2017, and many Americans had a great view. Although there are plenty of similarities between the 2017 total solar eclipse and the one coming April 8, there are a handful of differences. Mainly, the 2024 eclipse is going to cover more land and last longer.

The 2017 eclipse started over the northwest US and moved southeast. Additionally, that eclipse’s path was up to 71 miles wide, compared with a maximum width of 122 miles for this year’s eclipse. Perhaps most importantly, the moon completely covered the sun for just 2 minutes, 40 seconds in 2017. This year, maximum totality will last for nearly four-and-a-half minutes.

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