Due to COVID-19, the Class of 2020 is missing out on a traditional graduation. However, those who accepted SpaceX's invitation to upload selfies to the company's website will commemorate their milestone year with a journey most people only dream about.
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Given that each light-year — defined as the distance light travels in one Earth year — is about 6 trillion miles (9 trillion km), a black hole that lies 1,000 light-years away may not seem very close. However, to astronomers who are accustomed to cosmic distance scales, the recently-discovered HR 6819's black hole, which lies in the constellation Telescopium, is an extremely close neighbor.
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"Glow in the dark" dolphins may seem like something straight out of a science fiction movie. However, that is precisely what Newport Coastal Adventures' Captain Ryan Lawler and professional videographer Patrick Coyne witnessed on April 22, 2020, when they set out to explore the spectacular neon blue tides that have been lighting up the waters off Southern California's coast since mid-April.
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Researchers have long believed that all four-limbed animals or tetrapods, a group that includes amphibians, reptiles, and mammals, evolved from an ancient group of fish known as Elpistostege watsoni, which lived between 416 million and 358 million years ago, during the Devonian Period.
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While the novel coronavirus is dangerous for everyone, it is particularly so for the first responders who are being exposed to the illness daily. In the US alone, almost 5,500 nurses, doctors, and other healthcare professionals have been infected with COVID-19. Of these, dozens have succumbed to the disease. Now, hospital workers worldwide may get some reprieve thanks to Spot, a semi-autonomous four-legged robot developed by Waltham, Massachusetts-based robotics company, Boston Dynamics.
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Though considered a waste of time by some, sleep is essential for the health and wellbeing of humans. Over the years, researchers have found sleeping allows the body to repair and restore cells, get rid of irrelevant memories, and even help kids grow taller and obtain better grades. Now, it appears that snoozing for an average of 8 hours daily enables the brain to cleanse itself and get rid of harmful toxins.
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Earth Day, which is celebrated annually on April 22, is usually commemorated with outdoor activities demonstrating support for environmental protection. These include planting trees, collecting roadside or beach trash, and conducting, or participating in, recycling and conservation programs. While the coronavirus lockdowns will restrict some of the usual activities, organizations, educators, and activists worldwide have devised numerous ways to mark the 50th anniversary of this all-important holiday, which is dedicated to climate action this year, without leaving the comfort of your homes. Here are a few of the digital Earth Day celebrations planned for 2020.
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NASA's X-plane program, established in 1946 to test and evaluate new technologies and aerodynamic concepts, began with the launch of the X-1 — the first plane to break the sound barrier. Since then, the endeavor has led to numerous industry breakthroughs, including the first supersonic and hypersonic flights, and the first crewed suborbital flight.
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