A Giant Sunspot Doubled in Size in 24 Hours, And It’s Pointing Right at Earth

A gigantic sunspot has swelled to twice Earth’s size, doubling its diameter in 24 hours, and it’s pointed right at us. The sunspot, called AR3038, grew to 2.5 times Earth’s size – making the sunspot roughly 19,800 miles, or 31,900 kilometers, in diameter – from Sunday (June 19) to Monday night (June 20), according to … Read more

Earth’s Magnetic Poles Probably Won’t Flip After All, Scientists Predict

Our planet’s protective shell isn’t quite what it used to be. Over the past two centuries its magnetic strength has taken a nosedive, and nobody has the foggiest idea why. At the same time, a concerning soft-spot in the field called the South Atlantic Anomaly has blistered over the Atlantic ocean, and has already proven … Read more

Mars Has Auroras Without a Global Magnetic Field, And We Finally Know How

Earth’s auroras are a glorious wonder, but our planet isn’t the only place in the Solar System where these phenomena can be found. An atmospheric glow, albeit sometimes in invisible wavelengths, has been spotted at every planet except Mercury, and even some moons of Jupiter… and even a comet. But Mars is where it gets … Read more

These Videos From a Space Probe Flying Past The Sun Are Truly Out of This World

A spacecraft looping around the Sun has made its first close approach – and filmed the encounter in glorious detail. The European Space Agency’s (ESA) Solar Orbiter entered the close encounter, known as perihelion, on 26 March, coming in at a distance of around 48 million kilometers (30 million miles), inside the orbit of Mercury. … Read more