SPACE & DISCOVERYScience
What the colors in space photos actually mean
Learn why telescopes use assigned colors, what infrared images reveal and how to read a space photograph without mistaking it for an illustration.
The bigger picture
EXPLAINED, WITHOUT THE NOISESPACE & DISCOVERY
Artificial Intelligence
AI can sound certain. Here’s how to check its answers.
A practical way to verify AI answers: identify important claims, open original sources, check dates and separate evidence from a confident tone.
Technology
CPU cores and threads, without the jargon
Understand CPU cores, threads and clock speed, then learn which specifications actually matter for the work you do.
Technology
View allTechnology
CPU cores and threads, without the jargon
Understand CPU cores, threads and clock speed, then learn which specifications actually matter for the work you do.
Technology
RAM or storage? Find out what your slow computer needs
Learn the difference between RAM and storage, diagnose common slowdowns and check compatibility before upgrading a computer.
Technology
NVMe, SATA and M.2: how to read an SSD listing
Separate SSD shape from interface, understand real-world speed differences and avoid buying a drive that does not fit your computer.
Technology
Why two USB-C cables can do very different things
Understand USB-C charging, data speed and display support so you can choose the right cable and troubleshoot common connection problems.
Technology
Slow Wi-Fi? Run these checks before replacing your router
Separate internet problems from Wi-Fi coverage issues with a practical, repeatable troubleshooting routine for your home network.
Technology
Phone battery health: the habits that matter most
Learn how heat, charging routines and battery usage affect your phone, without turning everyday charging into a complicated ritual.
Artificial Intelligence
View allArtificial Intelligence
AI can sound certain. Here’s how to check its answers.
A practical way to verify AI answers: identify important claims, open original sources, check dates and separate evidence from a confident tone.
Artificial Intelligence
Better AI prompts start with a better brief
Use a clear task, relevant context, constraints and an example to get more useful AI drafts without complicated prompting tricks.
Artificial Intelligence
Before you paste that document into an AI chatbot
A simple privacy review for AI tools: check sensitive information, account settings, retention and permissions before sharing a document.
Artificial Intelligence
RAG explained: why an AI answer sometimes comes with your documents
Understand retrieval-augmented generation, how document search supports AI answers and why source checking still matters.
Artificial Intelligence
What an AI content detector score can—and cannot—tell you
Understand AI detector percentages, false positives and the difference between a style-based signal and evidence about how a document was written.
Artificial Intelligence
On-device AI: what stays on your phone, and what may not
Understand local AI processing, offline features and the privacy questions to ask before assuming an on-device feature sends no data anywhere.
NASA · International Space Station, August 2022A CLOSER LOOK
A light show with a much bigger story.
Explore how auroras form, why their colors vary and how to interpret space-weather forecasts without confusing them with local weather predictions.
Read the explainerScience & discovery
View allScience
What the colors in space photos actually mean
Learn why telescopes use assigned colors, what infrared images reveal and how to read a space photograph without mistaking it for an illustration.
Science
How do scientists find planets they can barely see?
Understand the transit and radial-velocity methods, what each reveals and why discovering a planet is different from discovering life.
Science
Auroras are beautiful. They also tell a story about space weather.
Explore how auroras form, why their colors vary and how to interpret space-weather forecasts without confusing them with local weather predictions.
Science
Weather and climate answer different questions
Understand why a cold day does not settle a climate argument, how long-term averages work and what to check in a temperature chart.
Science
How solar panels turn light into electricity
Follow the path from sunlight to a usable electrical supply, and learn why panel ratings, shade, heat and system design affect actual output.
Science
Space debris: why even a small fragment can matter
Learn what orbital debris is, why speed changes the risk and how tracking, collision avoidance and responsible disposal help protect satellites.
Your digital life, better protected
View allDigital Security
Passkeys explained: a different way to sign in
Learn how passkeys differ from passwords, why they resist phishing and what to check about recovery before using them on important accounts.
Digital Security
A message says it is urgent. Check this before you click.
Learn a practical phishing-check routine for suspicious delivery notices, account alerts and payment requests without relying on spelling mistakes.
Digital Security
Turn on two-factor authentication—and plan for a lost phone
Understand common two-factor methods, phishing-resistant options and the recovery steps to take before losing access to your main device.
Digital Security
Cloud sync is useful. A backup needs a recovery plan.
Learn how synchronization differs from backup, apply the 3-2-1 principle and test that your important files can actually be restored.
Digital Security
HTTPS protects a connection. It does not prove a website is honest.
Understand what a secure browser connection means, what certificate warnings tell you and how to assess an unfamiliar website more carefully.
Digital Security
That useful browser extension may have a lot of access
Review browser-extension permissions, restrict site access where supported and remove tools you no longer need.