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Category: space – Page 452

This week’s image from the Hubble Space Telescope shows two galaxies that are a hotbed of star formation. The pair, known together as Arp 303 or individually as IC 563 on the bottom right and IC 564 on the top left, are located 275 million light-years away. They are in the dim constellation of Sextans, named after the astronomical instrument used to measure the position of stars.

The image below was captured by two Hubble instruments during two separate observations. The two observations were combined to show both visible light data and data from the infrared part of the spectrum.

“The image holds data from two separate Hubble observations of Arp 303,” Hubble scientists write. “The first used Hubble’s Wide Field Camera 3 (WFC3) to study the pair’s clumpy star-forming regions in infrared light. Galaxies like IC 563 and IC 564 are very bright at infrared wavelengths and host many bright star-forming regions.

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NASA’s James Webb space telescope is almost ready to get to work. The telescope’s mirrors are perfectly aligned. The team is currently finishing up the final calibrations of the spacecraft’s various instruments. Once that is done, Webb will be ready to get to work. One of the first things NASA plans to do with it is study two “super-Earth” planets known as 55 Cancri e and LHS 384 b.

Of note, both planets are located in our own Milky Way galaxy.

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Ready to embrace some meteoric uncertainty?

The Tau Herculids meteor shower may light up the skies over North America on May 30 and 31. Or it may not. There’s a chance we might pass through the thickest part of the comet fragment that is creating the debris, in which case the night skies will be filled with shooting stars.

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While the SR-71 Blackbird remains the world’s fastest air-breathing aircraft, the rocket-powered X-15 has its own richly deserved place in the aviation history record books: on October 3, 1967, U.S. Air Force test pilot William “Pete” Knight became the fastest flying pilot ever when he achieved a speed of Mach 6.7, a record that has stood for nearly 55 years.

The Baby Steps Before that “One Small Step for Man…”

As if that one particular superlative weren’t impressive enough, the X-15 helped make history in other ways: before Neil Armstrong became the first man to walk on the Moon, he was taught to fly the X-15 to the edge of space by then-Colonel Chuck Yeager, who, of course, made history in his own right as the first man to break the sound barrier whilst flying the first of the “X” planes, t he Bell X-1.

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Stuart Firestein Science is a fundamentally optimistic enterprise. More than a cheery disposition, it is the source of a philosophical outlook that we might call ‘optimistical’. It reliably produces fundamental and actionable knowledge about the world. We are able to take for granted, in a way even our recent ancestors never imagined, the idea of progress. The engines behind science, surprisingly, are ignorance, the unknown, failure, and, perhaps most vexingly, uncertainty. In recent decades, science has undergone a change in perspective and practice — from viewing the universe like a clockwork regimented by laws and formulas to recognizing it as irreducibly complex and uncertain. Perhaps counter intuitively this has freed science to exploit previously unimaginable possibilities and opportunities. It has led to a deeper understanding of the nature of things and to the production of technologies such as lasers, microchips, the internet, genetics, and many more. And yet socially and societally we remain mired in a 19th century view of deterministic science. We might instead learn to revel in the adventure of navigable uncertainty and take advantage of the creative opportunities of a world where we can confidently say ‘it could be otherwise’. Possibility of this sort is the rarest and purest form of optimism. Stuart Firestein is a neuroscientist and the former Chair of Columbia University’s Department of Biological Sciences, where he researches the vertebrate olfactory system. He is also a member of SFI’s Fractal Faculty.

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