Tag: Dust

Most telescopes have what we call a B-V bandpass — a generic, high-energy blue and yellow light filter that gives us the star’s colour through the differences in the apparent brightness through the two filters. To get the total reddening of a star, we just measure the mass of t...

Digital Immortality (Sort Of) I’m not saying your Instagram feed is going to achieve sentience and start haunting people. Ah, maybe for some  But think about it: years after you’re gone, anyone could stumble upon your old tweets, vacation photos from 2008, maybe even that risq...

Clean air isn’t a luxury; it's a necessity. Indoor air quality is often worse than outdoor air, so choosing the right household air filter can greatly improve your family’s health and comfort. This guide will help you understand the best options for household air filters and air purifier...