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In 2018, NASA announced that the Voyager 2 probe had joined the Voyager 1 probe in reaching interstellar space, an area of space outside the solar wind's grasp. This year, on April 17th, the space agency celebrated the New Horizons probe reaching 50 astronomical units (AU) from the Sun, or 50 times the distance between Earth and the Sun. Now, NASA plans to go even further.
NASA plans to send a probe where no probe has been before, flying to the edge of the heliosphere by the early 2030s to understand how the solar system formed. The heliosphere is the bubble of space surrounding the sun and enclosing all the planets, from Mercury to Neptune and is affected by solar winds. So far Voyager 1 and Voyager 2, launched in 1977, are the only probes to venture outside the heliosphere, currently 14 and 11 million miles from Earth respectively. The Voyagers discovered the edge of the bubble but left scientists with many questions about how our star interacts with the loc...
Our Planet Is Travelling Through The Debris of Ancient Supernovae 21 APRIL 2021 Radioactive dust deep beneath the ocean waves suggests that Earth is moving through a massive cloud left behind by an exploded star. Continuously, for the last 33,000 years, space has been seeding Earth with a rare isotope of iron forged in supernovae. It's not the first time that the isotope, known as iron-60, has dusted our planet. But it does contribute to a growing body of evidence that such dusting is ongoing - we are still moving through an interstellar cloud of dust that could have originated from a su...