Latest articles by Stefanie Waldek
New York City is sinking — and it's not just because of the flooding
In some places, it's actually rising.
Antarctic sea ice hits 'record-smashing' low this year, satellite data shows
NASA and the National Snow and Ice Data Center have released some troubling data about our planet's polar regions.
Satellite spots marine heat wave off the California coast (image)
The Surface Water and Ocean Topography (SWOT) satellite recorded higher sea levels off California, indicating a marine heat wave.
Mysterious moonquake traced to Apollo 17 lunar lander base
A reanalysis of Apollo 17 seismic data has revealed that the Apollo 17 lunar lander base is creating its own moonquakes.
Contrails: What are they and how do they form?
Reference Condensation trails, or contrails, are long, thin clouds that can form behind airplanes at cruising altitude. They are created by jet engines.
Satellite imagery captures wildfires breaking across Greece (photo)
The Copernicus Sentinel-2 satellites are monitoring changes in the fire to aid civil protection and humanitarian response.
Instruments for NASA's VERITAS Venus mission get a test in Iceland (photos)
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.
Gemini constellation: Facts, location and myth
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.
Aries constellation: Facts, location and myth
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.
James Webb Space Telescope reveals how galaxies made the early universe transparent
Astronomers using the James Webb Space Telescope have determined that stars in early galaxies transformed the gas throughout the universe from opaque to transparent.
Why does Jupiter change its stripes? Scientists may finally have the answer
Using data from NASA's Juno spacecraft, an international team has correlated the variations in Jupiter's bands to changes in the planet's magnetic field.
Perseus constellation: Facts, location and myth
Reference Perseus is the 24th largest constellation in the sky and is visible across the Northern Hemisphere We explore the ancient constellation in more detail here.
See the crescent moon have a close encounter with Mars tonight
The moon and Mars will dance together in the night sky both tonight (May 23) and Wednesday night (May 24).
Rare 'black moon' new moon of May 2023 rises tonight
Tonight (May 19) is the new moon, and it's a rare "black moon," which occurs approximately once every 33 months.
Some mysterious 'fast radio bursts' may erupt from two-star systems
A new study has determined the most likely origin of one repeating fast radio burst to be a dense object — potentially a neutron star — with a binary companion.
Powerful sun storm could supercharge auroras this week
The sun fired a huge cloud of plasma directly at Earth on Sunday evening (May 7), an outburst that could boost auroras in the next day or so.
NASA is about to lock these 4 researchers in a simulated Mars outpost for a year
Four crewmembers will live in a 1,700-square-foot 3D-printed habitat at NASA's Johnson Space Center in a simulation of a Mars mission.
See dwarf planet Haumea at its closest to Earth in 285 years tonight
Dwarf planet Haumea reaches both opposition and perigee on April 20, making this a prime opportunity to see the dwarf planet in the night sky.
Watch the moon and Saturn have a close encounter in the sky tonight
The moon and Saturn will be separated by about three degrees during a conjunction and close approach that occurs overnight on April 15.
Watch the half-lit last quarter moon illuminate the night sky tonight
As we get closer to the new moon, stargazing conditions will improve with the lack of natural light pollution.
What time is the rare hybrid solar eclipse on April 20?
On April 20, 2023, there will be a rare hybrid solar eclipse. Though you won't be able to see the eclipse from North America, you can still tune in to live streams.
Sultan Al Neyadi to perform 1st spacewalk by an Arab astronaut this month
UAE astronaut Sultan Al Neyadi is scheduled to become the first Arab astronaut to perform a spacewalk on April 28, 2023. Al Neyadi is aboard the International Space Station for a six-month mission.
Pulverizing dangerous asteroids, building an observatory on the moon and more: 6 wild ideas catch NASA's eye
NASA has announced its 2023 Phase 2 NIAC grantees, a group of six futuristic concepts that include a radio telescope array on the moon and a new form of planetary defense.
