File: A SpaceX Falcon 9 rocket stands in launch position at Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base ahead of the launch of the NROL-57 mission. Image: SpaceX
The National Reconnaissance Office in the United States is preparing to send its 11th batch of small, reconnaissance satellites into low Earth orbit Monday morning. These are believed to be Starshield satellites, a government variant of SpaceX’s Starlink satellites, though the NRO hasn’t confirmed this.
Astronomical fall begins on Sept. 22 as the sun moves southward across the celestial equator.
Space agencies like NASA, the European Space Agency (ESA), the China National Space Agency (CNSA), and others are working to return astronauts to the Moon for the first time since the Apollo Era. Mounting missions beyond Low Earth Orbit (LEO), something that has not happened in over 50 years, presents several major challenges. One of the biggest is that resupply missions take much longer to send to the Moon and require heavier launch vehicles. Whereas the International Space Station can be resupplied in a matter of hours by a Falcon 9, missions bound for the Moon take about three days and require a Space Launch System (SLS) or the Starship.
Witness the first images of the September 2025 partial solar eclipse.
For over a century, scientists have known that the Universe is rapidly expanding. This phenomenon, named in honor of the astronomers who independently confirmed it (Edwin Hubble and Georges Lemaître), is known as the Hubble-Lemaitre Constant (or the Cosmological Constant). By the 1990s, the Hubble Space Telescope (designed to measure this constant) revealed that the rate at which the Universe was expanding was slower during the early Universe, which was in "tension" with measurements of recent cosmic epochs. This is what led to the "Hubble Tension" in astrophysics and cosmology, and the theory of Dark Energy (DE) as a possible means of explaining the discrepancy.
SpaceX launched its 119th Falcon 9 mission of the year today (Sept. 21), sending 28 of its Starlink internet satellites to orbit from Florida's Space Coast.
NASA will announce its new astronaut class on Monday (Sept. 22) and discuss its upcoming Artemis 2 moon mission on Tuesday and Wednesday (Sept. 23 and Sept. 24). Here's how to watch the events live.
Asteroid 2024 PT5 is considered Earth's mini-moon and may be a key target for potential asteroid mining operations.
From original content to additional features, here's our ranking of the best value streaming services for Sci-Fi fans looking to get the most for their money.
An ambient star projector that you can use outside? It sounds like a good idea, but in practice, it's severely lacking.
September's new moon occurs on Sept. 21 and will partially eclipse the sun for skywatchers in the southern Pacific Ocean and Antarctica.
Here's what you need to know to make the most of the partial solar eclipse on Sept. 21, as the moon takes a 'bite' out of the sun.
File: A SpaceX Falcon 9 rocket stands at Space Launch Complex 40 (SLC-40) ahead of the launch of the Starlink 12-18 mission. Image: Adam Bernstein/Spaceflight Now
SpaceX is preparing for a Falcon 9 launch from Cape Canaveral at dawn on Sunday.
Scientists have long understood that Earth's geological evolution is influenced by extraterrestrial factors. This includes the distribution of water, volatiles, and minerals from asteroids and comets within the Solar System, precious metals from nearby supernovae, and perturbances from passing stars. Basically, galactic events over the past few billion years have left their mark on Earth. According to new research from Curtin University, the structural evolution of the Milky Way galaxy also had an effect on the evolution of Earth's crust, as evidenced by ancient crystals beneath the surface.
Let’s say you’ve picked the perfect spot for building a settlement on Mars. But this opens up some pretty nasty questions. Building…what? And building….with what? There are no trees to chop down to construct temporary structures. There are no campfires you can build to keep warm while you start. There’s no…I don’t know…WILD GAME to hunt to feed yourself.
On May 21st, 2010, the Akatsuki orbiter ("Dawn" in Japanese) launched from the Tanegashima Space Center atop a H-IIA Launch Vehicle, establishing orbit around Venus in December 2015. In so doing, Akatsuki became the first interplanetary mission launched by the Japan Aerospace Exploration Agency (JAXA). For the past eight years, this mission has been continuously monitoring Venus' atmosphere to monitor its weather patterns using four types of instruments: an ultraviolet and infrared cameras, a high-speed imager, a radio science suite, and an ultra-stable oscillator.
Hadfield's 'Kaz' Zemeckis returns for this third entry in the bestselling author's 'The Apollo Murders' series
This skywatching quiz will test your knowledge of how eclipses, when to see them, and what makes each one so spectacular.
How did humans survive catastrophic volcanic explosions to piece together the story today?
The Seklin Galaxy Projector may be inexpensive, but unfortunately it shows in the quality and performance.
On Episode 178 of This Week In Space, Rod Pyle and Tariq Malik are joined by Terry Virts, a former shuttle and ISS astronaut, who is running for the U.S. Senate.
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