Space.com contributing writer Stefanie Waldek is a self-taught space nerd and aviation geek who is passionate about all things spaceflight and astronomy. With a background in travel and design journalism, as well as a Bachelor of Arts degree from New York University, she specializes in the budding space tourism industry and Earth-based astrotourism. In her free time, you can find her watching rocket launches or looking up at the stars, wondering what is out there. Learn more about her work at www.stefaniewaldek.com.
Latest articles by Stefanie Waldek

By Stefanie Waldek Published
Get a detailed look at Perseverance's current location on Mars — the ancient Jezero Crater.

By Stefanie Waldek Published
Scientists have no idea what the spokes are.

By Stefanie Waldek Published
The snow globe–esque image was created with Hubble data from 2006 to 2021.

By Stefanie Waldek Published
This might indicate a "glaciological tipping point" on the Antarctic Peninsula, an important consideration as global warming continues to affect ocean temperatures.

By Stefanie Waldek Published
The spacecraft recently burned 10 percent of its total fuel in a single 43-minute maneuver as preparation for the double gravity assist.

By Stefanie Waldek Published
Using ESA's ExoMars Trace Gas Orbiter, scientists have observed nightglow in Mars' atmosphere, a phenomenon where the night sky glows green, almost like an aurora.

By Stefanie Waldek Published
Thanks to century-old photos taken by Danish pilots, we can study long-term changes in Greenland's glaciers.
By Stefanie Waldek Published
Reference STEVE is an atmospheric phenomenon that is similar to yet separate from the aurora. It looks like a mauve streak across the night sky.
By Stefanie Waldek Published
A best-case projection that meets ambitious Paris Accord targets suggests the West Antarctic Ice Sheet will melt three times faster in the 21st century than it did in the 20th.

By Stefanie Waldek Published
Scientists used the new Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA) in California to capture radio images of October's annular eclipse.

By Stefanie Waldek Published
There are 10 primary types of clouds on Earth. Here you can learn about what they're made of, how they form and how they are classified.

By Stefanie Waldek Published
New research indicates that the number of migrating birds decreases during severe space weather events. They are also more prone to becoming lost.

By Stefanie Waldek Published
New research indicates that Mercury's thermal contraction was still occurring as recently as 300 million years ago.

By Stefanie Waldek Published
Observations from ESA's Copernicus Sentinel-5P satellite indicate the ozone hole above Antarctica is one of the largest seasonal holes ever observed.

By Stefanie Waldek Published
A NASA mission called APEP will launch three sounding rockets into the annular solar eclipse to measure changes in electric and magnetic fields, density, and temperature of the ionosphere.

By Stefanie Waldek Published
In some places, it's actually rising.

By Stefanie Waldek Published
NASA and the National Snow and Ice Data Center have released some troubling data about our planet's polar regions.

By Stefanie Waldek Published
The Surface Water and Ocean Topography (SWOT) satellite recorded higher sea levels off California, indicating a marine heat wave.

By Stefanie Waldek Published
A reanalysis of Apollo 17 seismic data has revealed that the Apollo 17 lunar lander base is creating its own moonquakes.

By Stefanie Waldek Published
Reference Condensation trails, or contrails, are long, thin clouds that can form behind airplanes at cruising altitude. They are created by jet engines.

By Stefanie Waldek Published
The Copernicus Sentinel-2 satellites are monitoring changes in the fire to aid civil protection and humanitarian response.

By Stefanie Waldek Published
This summer, the German Aerospace Center is testing instruments for NASA's VERITAS Venus mission on Iceland's lava flows, a stand-in for the hellishly hot planet.

By Stefanie Waldek Last updated
Reference Gemini, one of Ptolemy's ancient constellations, is named for the Greek twins Castor and Pollux, which are also the names of two of its stars.

By Stefanie Waldek Last updated
Reference Aries is one of Ptolemy's ancient constellations and is named for the Greek legend of the ram with the golden fleece sacrificed by Phrixus for Zeus.

By Stefanie Waldek Published
Astronomers using the James Webb Space Telescope have determined that stars in early galaxies transformed the gas throughout the universe from opaque to transparent.
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