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Grand Canyon-Sized Valleys On the Moon Formed Within 10 Minutes

Slashdot.org - 12 hours 24 min ago
A new study reveals that two Grand Canyon-sized valleys were formed in less than 10 minutes by "floods of rocks traveling as fast as bullets," reports Space.com. From the report: Scientists analyzed the lunar canyons, named Vallis Schrodinger and Vallis Planck, to find that these huge valleys measure 167 miles long (270 kilometers) and nearly 1.7 miles (2.7 km) deep, and 174 miles long (280 km) and nearly 2.2 miles deep (3.5 km), respectively. In comparison, the Grand Canyon is 277 miles long (446 km) and is, at most, about 1.2 miles deep (1.9 km), the researchers noted. [...] This pair of lunar canyons represents two of many valleys radiating out from Schrodinger basin, a crater about 200 miles wide (320 km) that was blasted out of the lunar crust by a cosmic impact about 3.81 billion years ago. This structure is located in the outer margin of the moon's largest and oldest remaining impact crater, the South Pole-Aitken basin, which measures about 1,490 miles wide (2,400 km) and dates about 4.2 billion to 4.3 billion years old. [...] The scientists estimate that rocky debris flew out from the impact at speeds between 2,125 to 2,860 miles per hour (3,420 to 4,600 km/h). In comparison, a bullet from a 9mm Luger handgun might fly at speeds of about 1,360 mph (2,200 km/h). The researchers suggest the energy needed to create both of these canyons would have been more than 130 times the energy in the current global inventory of nuclear weapons. "The lunar canyons we describe are produced by streams of rock, whereas the Grand Canyon was produced by a river of water," [said David Kring, a geologist at the Lunar and Planetary Institute of the Universities Space Research Association]. "The streams of rock were far more energetic than the river of water, which is why the lunar canyons were produced in minutes and the Grand Canyon produced over millions of years." The findings have been published in the journal Nature.

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Let's Encrypt Is Ending Expiration Notice Emails

Slashdot.org - Wed, 02/05/2025 - 22:30
Let's Encrypt will stop sending expiration notice emails for its free HTTPS certificates starting June 4, 2025. From the report: Let's Encrypt is ending automated emails for four stated reasons, and all of them are pretty sensible. For one thing, lots of customers have been able to automate their certificate renewal. For another, providing the expiration notices costs "tens of thousands of dollars per year" and adds complexity to the nonprofit's infrastructure as they are looking to add new and more useful services. If those were not enough, there is this particularly notable reason: "Providing expiration notification emails means that we have to retain millions of email addresses connected to issuance records. As an organization that values privacy, removing this requirement is important to us." Let's Encrypt recommends using Red Sift Certificates Lite to monitor certificate expirations, a service that is free for up to 250 certificates. The service also points to other options, including Datadog SSL monitoring and TrackSSL.

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Disney+ Lost 700,000 Subscribers From October-December 2024

Slashdot.org - Wed, 02/05/2025 - 21:10
Disney+ lost 700,000 subscribers in the last quarter of 2024, largely due to price hikes and expiring promotions. Despite the decline, Disney's overall streaming business remained profitable, boosted by strong box office results from Moana 2 and Hulu's 1.6 million added subscribers. IndieWire reports: Not counting Disney+ Hotstar, the cheap Disney+ service in India, Disney+ now has 124.6 million subs. ESPN+ also lost 700,000 subs in the period. Hulu was the streaming highlight, adding 1.6 million subscribers; it now has 53.6 million. All told, the company's streaming business was profitable for its third-straight quarter. So it wasn't all bad -- or unexpected. "Our results this quarter demonstrate Disney's creative and financial strength as we advanced the strategic initiatives set in motion over the past two years," said Disney CEO Bob Iger. "In fiscal Q1 we saw outstanding box office performance from our studios, which had the top three movies of 2024; we further improved the profitability of our Entertainment DTC streaming businesses; we took an important step to advance ESPN's digital strategy by adding an ESPN tile on Disney+; and our Experiences segment demonstrated its enduring appeal as we continue investing strategically across the globe. Overall, this quarter proved to be a strong start to the fiscal year, and we remain confident in our strategy for continued growth."

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Critical Rsync Vulnerability Requires Immediate Patching on Linux and Unix systems

nixCraft - Wed, 02/05/2025 - 20:35
Rsync is a opensource command-line tool in Linux, macOS, *BSD and Unix-like systems that synchronizes files and directories. It is a popular tool for sending or receiving files, making backups, or setting up mirrors. It minimizes data copied by transferring only the changed parts of files, making it faster and more bandwidth-efficient than traditional copying methods provided by tools like sftp or ftp-ssl. Rsync versions 3.3.0 and below has been found with SIX serious vulnerabilities. Attackers could exploit these to leak your data, corrupt your files, or even take over your system. There is a heap-based buffer overflow with a CVSS score of 9.8 that needs to be addressed on both the client and server sides of rsync package. Apart from that info leak via uninitialized stack contents defeats ASLR protection and rsync server can make client write files outside of destination directory using symbolic links. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post Critical Rsync Vulnerability Requires Immediate Patching on Linux and Unix systems appeared first on nixCraft. 2025-01-15T18:04:24Z 2025-01-15T18:04:24Z Vivek Gite

How to control the SSH multiplexing with the control commands

nixCraft - Wed, 02/05/2025 - 20:35
Multiplexing will boost your SSH connectivity or speed by reusing existing TCP connections to a remote host. This is useful when you frequently connect to the same server using SSH protocol for remote login, server management, using IT automation tools over SSH or even running hourly backups. However, sometimes your SSH command (client) will not respond or get hung up on the session when using multiplexing. Typically, this happens when your public IP changes (IPv4 to IPv6 changes when using DNS names), VPN issues, or firewall cuts connections. Hence, knowing SSH client control commands can save you time and boost your productivity when such gotchas occur. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to control the SSH multiplexing with the control commands appeared first on nixCraft. 2025-01-15T08:29:10Z 2025-01-15T08:29:10Z Vivek Gite

ZFS Raidz Expansion Finally, Here in version 2.3.0

nixCraft - Wed, 02/05/2025 - 20:35
After years of development and testing, the ZFS raidz expansion is finally here and has been released as part of version 2.3.0. ZFS is a popular file system for Linux and FreeBSD. RAIDz is like RAID 5, which you find with hardware or Linux software raid devices. It protects your data by spreading it across multiple hard disks along with parity information. A raidz device can have single, double, or triple parity to sustain one, two, or three hard disk failures, respectively, without losing any data. Hence, expanding or adding a new HDD is a very handy feature for sysadmins in today's data-sensitive apps. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post ZFS Raidz Expansion Finally, Here in version 2.3.0 appeared first on nixCraft. 2025-01-14T09:19:20Z 2025-01-14T09:19:20Z Vivek Gite

How to run Docker inside Incus containers

nixCraft - Wed, 02/05/2025 - 20:35
Incus and Docker both use Linux kernel features to containerize your applications. Incus is best suited when you need system-level containers that act like traditional VMs and provide a persistent developer experience. On the other hand, Docker containers are ephemeral, i.e., temporary in nature. All files created inside Docker containers are lost when your Docker container is stopped or removed unless you stored them using volumes in different directories outside Docker. Docker is created as a disposable app deployment system. Incus containers are not typically created as disposables, and data is kept inside when they are stopped. Because of the Linux kernel support nesting feature, you can run Docker inside Incus. This page explains how to run Docker inside Incus containers. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to run Docker inside Incus containers appeared first on nixCraft. 2024-12-18T05:44:26Z 2024-12-18T05:44:26Z Vivek Gite

MySQL Change root Password Command

nixCraft - Wed, 02/05/2025 - 20:35
How do I change MySQL root password under Linux, FreeBSD, OpenBSD and UNIX-like like operating system over the ssh session? Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post MySQL Change root Password Command appeared first on nixCraft. 2024-12-09T16:19:00Z 2024-12-09T16:19:00Z Vivek Gite

How to enable mouse to copy & paste in vim

nixCraft - Wed, 02/05/2025 - 20:35
Some Linux distro like Debian or specific BSD variants provide very little configuration support for mouse out of the box for Vim. Let us see how to paste in Vim using a mouse by enabling support, which is useful for new developers and sysadmin coming from Windows background. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to enable mouse to copy & paste in vim appeared first on nixCraft. 2024-11-28T13:44:35Z 2024-11-28T13:44:35Z Vivek Gite

How to install vnstat on Debian 12/11 to monitor network interface bandwidth usage

nixCraft - Wed, 02/05/2025 - 20:35
Do you need to keep track of the network traffic (bandwidth) usage for the Network interface controller (NIC) of your Debian Linux-based cloud or bare metal server? Look no forward. Try the vnStat, a free and open-source console-based network traffic monitor that keeps a log of 5-minute intervals, hourly, daily, monthly, and yearly network traffic for the selected interface. Once installed, vnStat can be used even without root permissions on most systems. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to install vnstat on Debian 12/11 to monitor network interface bandwidth usage appeared first on nixCraft. 2024-11-27T19:07:02Z 2024-11-27T19:07:02Z Vivek Gite
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