Hubble’s Contentious Constant0
- From Around the Web, Space
- November 23, 2017
There are two leading ways to measure the universe’s rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal.
There are two leading ways to measure the universe’s rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal.
The super-sized successor to NASA’s legendary Hubble Space Telescope is more than a year away from deploying its massive two-storey tall, gold-plated mirrors in the harshness of deep space. That’s why scientists are busy freezing the US$9 billion, 6,200 kilogram spacecraft to see if they can break it here on Earth.
In September of 2016, astronomers using NASA’s Hubble Space Telescope imaged what may be water vapor plumes erupting off the surface of Jupiter’s moon Europa.
Its days are short–less than 11 hours–and its temperature is hot–a blistering 2,600 degrees Fahrenheit. Its rain showers arrive in the form of liquid iron and glass.