2025-07-14
Jack Dorsey's new app tracks your sun exposure
Another day, another app from Jack Dorsey. The Twitter co-founder has announced an app called Sun Day just one week after releasing the peer-to-peer messaging app Bitchat.
While Bitchat is an internet-free app for communicating with friends over Bluetooth, Sun Day is all about, well, the sun. The latest app tracks your UV exposure and how much Vitamin D you get. It does this using a few personal details, including your location. Sun Day also [...]
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2025-07-17
Jack Dorsey backs an open-source development collective with $10 million
Jack Dorsey has been back in the news lately after unveiling a pair of new apps he worked on, Bluetooth-based messenager Bitchat and UV exposure tracker Sun Day. The Block CEO put those together under [...]
2025-03-29
The Partial solar eclipse will be visible at sunrise today: Here's how to watch it
Today's the day: A solar eclipse will darken the skies in the northeastern US and Canada in the early hours of Saturday. Unlike the “Great American Eclipse” of 2024, however, this will not be [...]
2025-03-27
Partial Solar Eclipse: Where and when to see the sunrise event on March 29
On Saturday, March 29, a solar eclipse will darken the skies. Unlike the “Great American Eclipse” of 2024, though, this will not be a total eclipse; instead, a partial eclipse will be visible in t [...]
2025-07-07
Jack Dorsey just released a Bluetooth messaging app that doesn't need the internet
Jack Dorsey just released a decentralized, peer-to-peer messaging app that functions entirely over Bluetooth networks, as reported by CNBC. It's called Bitchat and doesn't need the internet [...]
2025-07-28
Jack Dorsey's Bluetooth messaging app is now on the App Store
Earlier this month, Block CEO and Twitter co-founder Jack Dorsey unveiled a peer-to-peer, Bluetooth-based messaging app he put together. Now, anyone with a compatible iPhone, Mac or iPad (or even Appl [...]
2025-06-12
Solar Orbiter captures images of the sun's pole for the first time
The Solar Orbiter has been observing the sun since 2021, but it recently went on a side trip to Venus which significantly tilted its orbit and gave it a good view of the sun's polar region. That [...]
2025-04-24
Can I offer you a nice image of the Sun in these trying times?
The joint ESA and NASA Solar Orbiter mission has delivered a stunning new image of the Sun and its corona. The sun-observing satellite originally launched in 2020, and besides making the Sun look cool [...]