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By Clare Wilson Positive and negative rapid lateral flow tests Anna Mente/Shutterstock With the omicron variant of the coronavirus on the rise, regular testing has become even more important, particularly as people decide whether to socialise during the Christmas period. Here’s everything you need to know about testing. What is the difference between a lateral … Read more
The Universe is too heavy. According to our measurements of the normal matter in the Universe, there’s not nearly enough of it to account for the strength of the gravitational effects we can see. Whatever is making up the rest of the mass is nothing we can detect directly, and the quest to figure … Read more
The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. As winter begins and the holidays are in full swing, the COVID-19 pandemic has entered another worrying phase. Emergence of the omicron variant, along with increasing rates of infections, have left many people unsure about their holiday plans. On Dec. … Read more
General relativity has withstood perhaps its toughest challenge to date. The theory, which Albert Einstein published in 1916, revolutionized our understanding of physics and the cosmos. It explains gravity as a consequence of space-time’s flexibility: Massive objects warp space-time, creating depressions around which other bodies orbit. Scientists have put general relativity to the test repeatedly … Read more