Science Archives

June 21, 2019June 21, 2019 by Evan Gough

NASA Model Shows Greenland’s Ice Sheet Will Disappear Over the Next 1000 Years, Raising Sea Levels by 7 Meters

The Greenland ice sheet could be gone in a thousand years. Don't buy waterfront property. Image Credit: NASA

Great news! Humankind’s greatest-ever engineering project is nearing completion. Soon we will have warmed the Earth enough to get rid of all those pesky ice sheets and other frozen areas. The finish line is in sight.

If we all work together for the next thousand years, we’ll finally reach our goal!

June 21, 2019June 21, 2019 by Evan Gough

Deep Space Atomic Clocks Will Help Spacecraft Answer, with Incredible Precision, if They’re There Yet

The Deep Space Atomic Clock, a new technology from NASA's JPL, may change the way spacecraft navigate in space. Launching in late June aboard the Orbital Test Bed satellite, on the SpaceX's Falcon Heavy rocket, descendants of the technology demonstration could be a key component of a self-driving spacecraft and a GPS-like navigation system at other worlds.Credit: General Atomics Electromagnetic Systems

How do spacecraft know where they are? There’s no GPS out there. Right now, it involves sending a signal to the spacecraft which the spacecraft then sends right back to Earth. The elapsed time reveals the distance.

But on June 24th, that method could be replaced by something much more autonomous.

June 19, 2019June 19, 2019 by Evan Gough

The Earliest Example of Merging Galaxies Ever Found

An artist's illustration of the merging galaxy object B14-65666. Image Credit: NAOJ

Galaxy mergers are not particularly rare, but they are important events. Not only for the galaxies involved, but for scientists trying to piece together how galaxies evolve. Now, astronomers using ALMA have found the earliest example yet of merging galaxies.

June 14, 2019June 14, 2019 by Evan Gough

Saltwater Similar to the Earth’s Oceans has been Seen on Europa. Another Good Reason Why We Really Need to Visit This Place

Tara Regio is the yellowish area to left of center, in this NASA Galileo image of Europa’s surface. This region of geologic chaos is the area researchers identified an abundance of sodium chloride. Image Credit: NASA/JPL/University of Arizona

Jupiter’s moon Europa is an intriguing world. It’s the smoothest body in the Solar System, and the sixth-largest moon in the Solar System, though it’s the smallest of the four Galilean moons. Most intriguing of all is Europa’s subsurface ocean and the potential for habitability.

June 13, 2019June 13, 2019 by Evan Gough

An Orbit Map of the Solar System

This orbit map of the Solar System was made by Eleanor Lutz. Check out her work at Tabletop Whale (tabletopwhale.com) Image Credit: Eleanor Lutz

If you want to know what a talent for scientific visualizations looks like, check out Eleanor Lutz. She’s a PhD student in biology at the University of Washington, and at her website Tabletop Whale, you can see her amazing work on full display.

Her latest piece is a map showing all the orbits of over 18,000 asteroids in the Solar System. It includes 10,000 asteroids that are over 10km in diameter, and about 8,000 objects of unknown size.

June 12, 2019June 12, 2019 by Evan Gough

Mimas Pushes Through Saturn’s Rings Like a Snowplow

Saturn's rings and moons have been the subject of scientific debate. A 2019 study showed that the migration of Saturn's moons has widened the Cassini Division in Saturn's rings. Image Credit: Cassini, Dante, Baillié and Noyelles

Saturn’s moon Mimas is the smallest of the gas giant’s major moons. (Saturn has 62 moons, but some of them are tiny moonlets less than 1 km in diameter.) Two new studies show how Mimas acted as a kind of snow-plow, widening the Cassini division between Saturn’s rings.

June 11, 2019June 12, 2019 by Evan Gough

That Explains a Lot. The Moon’s Largest Crater has a Chunk of Metal Embedded in it That’s 5 Times Bigger than the Big Island of Hawaii

A false-colour graphic of the far side of the Moon showing the impact crater. Image Credit: NASA/Goddard Space Flight Center/University of Arizona

One of the largest craters in the Solar System is on our Moon. It’s called the South Pole-Aitken (SPA) basin and it’s 2,500 km (1,600 mi) in diameter and 13 km (8.1 mi) deep. A new study says that the basin may contain an enormous chunk of metal that’s larger than Hawaii’s Big Island.

June 6, 2019June 6, 2019 by Evan Gough

There’s a Ring of Cool Gas Wrapped Around the Milky Way’s Supermassive Black Hole

Scientists using ALMA have for the first time captured an image of the cool gas near the black hole in the Milky Way. Image Credit: NRAO/AUI/NSF; S. Dagnello

There’s a lot going on at the center of our galaxy. A supermassive black hole named Sagittarius A-Star resides there, drawing material in with its inexorable gravitational attraction. In that mind-bending neighbourhood, where the laws of physics are stretched beyond comprehension, astronomers have detected a ring of cool gas.

May 29, 2019May 29, 2019 by Evan Gough

Different Conditions From Earth Drive the Movement of Sand Dunes on Mars

Mars is a sandy planet and the HiRISE camera on the Mars Reconnaissance Orbiter (MRO) has given us tons of beautiful pictures of Martian sand dunes. But Mars’ dunes are much different than dunes here on Earth. Their movement is governed by different factors than Earth dunes.

May 28, 2019May 28, 2019 by Evan Gough

This Strange Feature on Mars was Probably the Result of an Ancient Volcanic Explosion

An olivine-rich deposit near Nili Fossae on the Martian surface. Image Credit: NASA/MRO

A strange feature on the surface of Mars has kept scientists guessing about its origin. It’s a surface deposit of a mineral which is more common in the interiors of planets. A new study shows that this interior mineral was probably brought to the surface by an ancient explosive volcano.