Since the Juno spacecraft has been in orbit around Jupiter for nearly five years — since July 4, 2016 — you may have forgotten about that time back in 2013 Juno flew past Earth. The spacecraft needed a little extra boost to reach Jupiter, so it used Earth for a gravity assist. Image editor Kevin Gill reminded us of that flyby with some stunning newly processed images of Earth, taken by the JunoCam, the “citizen science” camera on board. Pale blue dot indeed!Continue reading “Juno Captured This Image of Earth on its Way Out to Jupiter Back in 2013”
This is our Great Question: How did life begin on Earth? Anyone who says they have the answer is telling tall tales. We just don’t know yet.
While a definitive answer may be a long way off—or may never be found—there are some clever ways to nibble at the edges of that Great Question. A group of researchers at Kobe University in Japan are taking their own bites out of that compelling question with a question of their own: Did the heat from asteroid impacts help life get started?Continue reading “Did Asteroid Impacts Provide Both the Heat and Raw Ingredients to Enable Life?”
A gigantic chunk of ice recently broke off from an ice shelf in Antarctica, and is currently the world’s largest iceberg. The iceberg, dubbed A-76, measures around 4,320 square km (1,670 square miles) in size. At 170 km (106 miles) in length and 25 km (15 miles) wide, the iceberg is slightly larger than the Spanish island of Majorca, and bigger than the state of Rhode Island in the US.
A-76 was captured in the above image by ESA’s Copernicus Sentinel-1 satellite. Below is an animation of the iceberg calving off the Ronne Ice Shelf.Continue reading “This is Currently the World’s Largest Iceberg”
The Galápagos Islands hold an honored place in science history. I often wonder, if Charles Darwin could have seen this volcanic archipelago from this vantage point – a satellite view – how might have that aided or changed his research on evolution?Continue reading “The Galápagos Islands From Space”
About 66 million years ago a massive chunk of rock slammed into Earth in what is the modern-day Yucatan Peninsula. The impact extinguished about 75% of all life on Earth. Most famously, it was the event that wiped out the dinosaurs.
While mainstream scientific thought has pointed to an asteroid as the impactor, a new research letter says it could’ve, in fact, been a comet.Continue reading “Did a Comet Wipe out the Dinosaurs?”
The words “snow” and “Hawai’i” are not often mentioned in the same paragraph – or even on the same vacation. But snow does fall in Hawai’i almost every year, and 2021 has seen a deep cold front drop snow on the summits of Mauna Loa and Mauna Kea on the Big Island at least three times in the past few weeks – as well as on Haleakala on Maui. This means there are currently in snowcaps on Hawai’i’s three tallest mountains.Continue reading “Three Storms Have Dumped Snow on Mauna Loa and Mauna Kea”
Iceberg A-68A, the massive frigid behemoth posing a threat to South Georgia Island, might be breaking into pieces. Satellite images from the European Space Agency showed large cracks forming in the iceberg.
Now it appears to breaking apart.Continue reading “It Looks Like Iceberg A-68A is Coming Apart”
50 years ago this week, the Apollo 14 crew flew their mission to the Moon. Alan Shepard and Edgar Mitchell were the third pair of astronauts to walk on the lunar surface. They conducted two moonwalks in the Fra Mauro highlands, collecting rocks and setting up science experiments, as well as broadcasting the first color TV images from the Moon.
Meanwhile, Stuart Roosa remained in orbit as the Command Module pilot. But Roosa wasn’t alone while circling above the Moon.Continue reading “Is There An Apollo 14 Moon Tree Near You?”
There’s no doubt that the Moon has water on its surface. Orbiters have spotted deposits of ice persisting in the perpetual shadows of polar craters. And recent research shows that water exists in sunlit parts of the Moon, too.
Over the years, scientists have presented evidence that the Moon’s water came from comets, from asteroids, from inside the Moon, and even from the Sun.
But now new research is pointing the finger directly at Earth as the source of some of the Moon’s water.Continue reading “The Earth’s Magnetosphere Might be Creating Water on the Moon”
The Solar Orbiter spacecraft is heading towards the center of the Solar System, with the goal of capturing the closest images ever taken of our Sun. But during its flight, the spacecraft turned back to look towards home. It captured Venus, Earth, and Mars together, as seen from about 155.7 million miles (250.6 million kilometers) away.Continue reading “Solar Orbiter Caught Venus, Earth and Mars in One of its Photos”