Breakthrough Starshot seeks proof of concept for a 100-million-mile-per-hour mission – using light-propelled nanocrafts – to reach the nearest star in 20 years.
Alpha Centauri is the nearest star system to our sun at 4.3 light-years away. That’s about 25 trillion miles (40 trillion km) away from Earth – nearly 300,000 times the distance from the Earth to the sun. How might we travel to Alpha Centauri, the next-nearest star? And how long would it take to get there? Read about star travel via conventional propulsion, warp drives, and more.
No, Earth’s magnetic field did not collapse for 2 hours on April 23. The erroneous story – which is still spreading – came from a glitch in a computer simulation.
Visualize a vast reservoir of icy comets on the outskirts of our solar system. That’s what Jan Oort did in 1950, and why the Oort Cloud bears his name.
Red rainbows happen when the sun is on the horizon. They’re created in much the same process that causes a sunset or sunrise to look red. Details – and more photos – inside.
This Hubble Space Telescope image reveals the first moon ever discovered around little Makemake, in the outermost region of our solar system.
The JWST mirror covers off for a few days this week, and webcams are set up at Goddard Space Flight Center. Watch! Link inside.
The meltdown at the Chernobyl Nuclear Power Plant happened 30 years ago today – April 26, 1986. The disaster exposed 572 million people to radiation. No other nuclear accident holds a candle to that level of public health impact.
ESA has announced some final results sent back by Venus Express obtained when – in the spacecraft’s final months – it surfed in Venus’ dense atmosphere. The data show the planet’s atmosphere to be rippling with atmospheric waves and colder than anywhere on Earth.
Scientists have discovered iron-60, a form of iron only created in supernovae, in moon rocks collected by Apollo astronauts. It supports an earlier finding that – 2 million years ago – a supernova exploded only 300 light-years away.