Last year, scientists published a paper with an iconic diagram: a black circle representing, to scale, a 5-solar-mass black hole—and the size of the hypothetical Planet Nine if it were a black hole instead of a planet. So, if Planet Nine really is a black hole, how would we find it? Physicist Edward Witten, famed theorist at the Institute for Advanced Study, has an idea. All it requires is an army of small, laser-launched spacecraft with really accurate clocks.

Say There Were a Black Hole in Our Solar System: How Would We Find It?

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It seemed like Apple completely reinvented the way we used iPads with the recent iPadOS 13 update that added support for trackpads and mice. But now iPadOS 14 is here.  It’s not quite the overhaul that iPadOS 13 was, but the update adds a few useful features that could make it easier to get work done on your iPad.  To start, an interface redesign puts puts navigation and organizational tools front and center in the apps you use most.

iPadOS 14 Could Solve A Bunch of Little Problems We Have with iPad

In an email, Amazon notified Dash Wand owners that it’s ending support for the device as of July 21. What’s that you say? You’ve never heard of the Dash Wand? Well, that’s hardly surprising. The first iteration of the gadget was introduced back in ye olde days of 2014. It was a lil wand thing with a barcode scanner and microphone, meaning you could scan your groceries or tell the stick to restock up what you were running low on. It got a quiet refresh in 2016.

Goodbye Useless Amazon Dash Wand, May You Rest Peacefully in Eternal Obscurity

Japan’s Riken institute has ripped through prior records on computing speed, with its brand-new Fugaku supercomputer performing 2.8 times more calculations per second in a biannual speed ranking than the previous record holder, the IBM system at Oak Ridge National Laboratory. Summit, the Oak Ridge computer, is now second place.

Japan's New Fugaku Supercomputer Is Number One, Ranking in at 415 Petaflops

Our big boy president has once again angered the mods, with Twitter flagging another one of his tweets for violating its rules.

Last week, Donald Trump tweeted, “There will never be an ‘Autonomous Zone’ in Washington, D.C., as long as I’m your President. If they try they will be met with serious force!” (The autonomous zone is a reference to a group of protesters against police brutality in Seattle who have occupied parts of the Capitol Hill neighborhood and declared it a cop-free area; local officials have described it as resembling a block party, while the right-wing media and Trump have played it up as an apocalyptic threat to national security organized by terrorists.)

Once Again, Mr. President, You Have Broken the Rules of the General Discussions Board

Apple users will now be able to trade-in their old Macs in physical Apple Stores rather than having to use the company’s online system for these devices. An Apple representative confirmed the change to Gizmodo, and an updated FAQ on Apple’s trade-in hub now omits language that previously stated that the only exception to in-store trade-ins was Apple’s line of computers.

Say There Were a Black Hole in Our Solar System: How Would We Find It?

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