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Neutron Star or Black Hole? The Signals Astronomers Use to Tell Them Apart

9 September 2026 at 15:00

A brilliant X-ray source is not automatically a black hole. Matter falling toward a neutron star can also become intensely luminous, and some neutron stars have surprised astronomers by producing far more radiation than expected. Identifying the object requires evidence about its mass, its rotation and whether incoming gas encounters a material surface. The distinction […]

The post Neutron Star or Black Hole? The Signals Astronomers Use to Tell Them Apart appeared first on Curiosmos.

Why Venus Can Shine Brightest When It Looks Like a Crescent

9 September 2026 at 13:30

Venus can reach its greatest brilliance while a telescope shows only a crescent. A nearly full Venus exposes more of its sunlit hemisphere, yet that does not necessarily deliver more light to Earth. The missing part of the explanation is distance: a closer crescent can look much larger than a distant, almost fully illuminated disk. […]

The post Why Venus Can Shine Brightest When It Looks Like a Crescent appeared first on Curiosmos.

Saturn Has a Ten-Sided Wave at Its South Pole. How Does It Compare With the Hexagon?

9 September 2026 at 12:45

Saturn’s south pole has a ten-sided atmospheric wave, giving astronomers a new counterpart to the planet’s famous northern hexagon. The southern pattern appears to be evolving, raising a question that a single striking image cannot answer: will it become another enduring feature of the planet’s weather? A study announced on September 2 traces the feature […]

The post Saturn Has a Ten-Sided Wave at Its South Pole. How Does It Compare With the Hexagon? appeared first on Curiosmos.

Webb Finds 27 Tiny Worlds Beyond Neptune. Their Colors Hold a Clue to the Solar System’s Past

9 September 2026 at 12:00

Twenty-seven faint objects beyond Neptune have emerged from a deep James Webb Space Telescope survey, extending the search for the solar system’s building blocks to worlds only kilometres across. Hubble observations of part of the sample add a second clue: their colors resemble those of larger objects, suggesting that size alone has not erased the […]

The post Webb Finds 27 Tiny Worlds Beyond Neptune. Their Colors Hold a Clue to the Solar System’s Past appeared first on Curiosmos.

What Is Dark Energy? The Mystery Behind the Universe’s Accelerating Expansion

9 September 2026 at 10:00

Dark energy is one of the least satisfying names in astronomy because it sounds more specific than it is. Scientists did not discover a glowing substance called dark energy. They gave that name to the unknown influence associated with the accelerating expansion of the universe. The evidence is strong that the expansion is speeding up […]

The post What Is Dark Energy? The Mystery Behind the Universe’s Accelerating Expansion appeared first on Curiosmos.

How Fast Does Light Travel? The Cosmic Speed Limit Explained

8 September 2026 at 10:00

In empty space, light travels at exactly 299,792,458 meters per second. That is about 300,000 kilometers per second, or 186,282 miles per second. It is the fastest speed at which matter, energy, or information can travel through the universe. The number is so large that it is easy to treat light as instantaneous. Across cosmic […]

The post How Fast Does Light Travel? The Cosmic Speed Limit Explained appeared first on Curiosmos.

What Is a Neutron Star? The City-Sized Remnant of a Stellar Explosion

7 September 2026 at 10:00

A neutron star is what remains after the core of a massive star collapses. It is not a small ordinary star. It is the crushed core of a dead one, compressed until protons and electrons are forced together and most of the material becomes neutrons. The result is one of the strangest objects in the […]

The post What Is a Neutron Star? The City-Sized Remnant of a Stellar Explosion appeared first on Curiosmos.

Perseverance Watched Earth Disappear Behind Mars’ Moon Phobos

11 August 2026 at 14:00

From the rim of Jezero Crater, Earth is only a bright point in the sky. On July 2, NASA’s Perseverance rover watched that point vanish behind Phobos, Mars’ larger moon, and recorded the event with its Mastcam-Z camera. The sequence is the first time humanity has observed Earth disappearing behind an object from the surface […]

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Third Early Career Workshop, Sept 2026

9 September 2026 at 12:25

Physics of the Cosmos Third Early Career Workshop

NASA’s Physics of the Cosmos Program, in collaboration with the Physics of the Cosmos Program Analysis Group Executive Committee, is pleased to announce the Third Early Career Workshop. Participants will benefit from engaging interactive sessions covering essential topics including grant opportunities, navigating data archives, and effective strategies for career advancement.

Physics of the Cosmos about Physics of the Cosmos Third Early Career Workshop

Location

Virtual

Dates

22-24 September 2026
1:00pm-4:00pm ET / 10:00am-1:00pm PT

Community

Physics of the Cosmos

Type

Workshop

Physics of the Cosmos

Inspiring the Next Generation of Astrophysicists

The workshop will be held on September 22 – 24, 2026, from 1:00PM to 4:00PM Eastern Time and will be fully virtual.

This workshop aims to provide early career scientists with valuable insights into the groundbreaking research conducted within the Physics of the Cosmos Program, demonstrate essential tools and resources available to them, and address their questions and concerns.

Registration about Inspiring the Next Generation of Astrophysicists
Physics of the Cosmos Third Early Career Workshop Poster

This third workshop will discuss three topics—Science, Missions, and Career Development— and will also showcase the importance of collaborations.

This workshop is tailored for graduate students, postdoctoral researchers, and early-career scientists looking to enhance their professional trajectory in astrophysics.

Workshop Schedule

The workshop will include a tutorial on the NASA Astrophysics Data System (ADS) Science Explorer (SciX), talks on upcoming missions including the Compton Spectrometer and Imager (COSI) and the Ultraviolet Explorer (UVEX), updates on NASA programs for students and postdocs, a CV writing mini-workshop, presentations by your fellow early career researchers on exciting science and technology development projects, and much more!

The full program will be coming soon.

Downloads

Physics of the Cosmos Third Early Career Workshop Poster

Aug 11, 2026

PDF (679.39 KB)

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This cropped horizontal image has layers of semi-opaque rusty red colored gas and dust that starts at the bottom right and goes toward the top left. There are three prominent pillars rising toward the top left. The left pillar is the largest and widest. The peaks of the second and third pillars are set off in darker shades of brown and have red outlines.

The post Third Early Career Workshop, Sept 2026 appeared first on NASA Science.

NASA’s Lunar Test Facility Is Trying to Keep Moon Dust Out of Artemis Hardware

11 August 2026 at 11:00

Moon dust looks soft in photographs, but it is a difficult material for machines and people. The grains are sharp, abrasive and electrically clingy. NASA engineers at Johnson Space Center are using a dedicated test facility to find out how tools, joints and spacesuits will cope with it before Artemis astronauts return to the lunar […]

The post NASA’s Lunar Test Facility Is Trying to Keep Moon Dust Out of Artemis Hardware appeared first on Curiosmos.

NASA Is Testing the Antennas for Its Next Mars Aircraft

11 August 2026 at 08:00

NASA is testing the communications and radar hardware for a proposed Mars aircraft mission called SkyFall. The project is still on Earth, but its engineers are working through the details that would allow three small aircraft to fly in the thin Martian atmosphere and send useful data back to a rover or an orbiter. A […]

The post NASA Is Testing the Antennas for Its Next Mars Aircraft appeared first on Curiosmos.

NASA’s PREFIRE Satellites Show How the Poles Trade Heat With Space

11 August 2026 at 05:00

At Earth’s poles, much of the heat leaving the planet is invisible to human eyes. NASA’s two PREFIRE CubeSats are measuring that far-infrared energy directly, and a new animation built from two complete seasonal cycles shows just how differently the Arctic and Antarctic warm and cool. The Polar Radiant Energy in the Far-InfraRed Experiment began […]

The post NASA’s PREFIRE Satellites Show How the Poles Trade Heat With Space appeared first on Curiosmos.

A Magnetar May Have Bent Empty Space—NASA’s IXPE Tests a 90-Year-Old Prediction

10 August 2026 at 22:00

Empty space is not completely empty in the equations of quantum physics. Under an ordinary magnetic field, that distinction is impossible to notice. Near a magnetar—a neutron star with a magnetic field trillions of times stronger than Earth’s—space itself can alter the way light travels. NASA’s Imaging X-ray Polarimetry Explorer (IXPE) has measured unusually strong […]

The post A Magnetar May Have Bent Empty Space—NASA’s IXPE Tests a 90-Year-Old Prediction appeared first on Curiosmos.

NASA’s PUNCH Mission Cut Solar-Storm Arrival Uncertainty to 30 Minutes

10 August 2026 at 20:00

Forecasting a solar storm is a little like watching a wave leave a distant coast and trying to guess when it will reach the beach. Scientists can see a coronal mass ejection (CME) leave the Sun, but its speed and shape can change as it crosses space. By the time it reaches Earth, the warning […]

The post NASA’s PUNCH Mission Cut Solar-Storm Arrival Uncertainty to 30 Minutes appeared first on Curiosmos.

Why Do Stars Twinkle While Planets Usually Look Steady?

10 August 2026 at 13:00

Stars do not actually switch their lights on and off when they twinkle. The flicker happens between the star and your eyes, as its light passes through Earth’s moving atmosphere. Planets are affected by the same air, but they usually look steadier because their light arrives from a small disk rather than a single point. […]

The post Why Do Stars Twinkle While Planets Usually Look Steady? appeared first on Curiosmos.

The Oort Cloud: The Distant Shell of Comets We Have Never Seen Directly

10 August 2026 at 11:00

The Oort Cloud is one of the strangest places in the Solar System because it has never been seen directly. Astronomers infer its existence from the paths of long-period comets: icy bodies that spend most of their lives in deep space and only occasionally fall toward the Sun. NASA describes the Oort Cloud as a […]

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Webb Found a Hidden Planet in Beta Pictoris By Reading Its Atmosphere

9 August 2026 at 04:00

Astronomers have found a third giant planet around Beta Pictoris, one of the best-known young planetary systems near Earth. The discovery is striking because the planet was not first picked out as a bright dot in a telescope image. NASA’s James Webb Space Telescope found it in the spectrum of light coming from the system: […]

The post Webb Found a Hidden Planet in Beta Pictoris By Reading Its Atmosphere appeared first on Curiosmos.

NASA Is Targeting an August Launch for Roman. Here’s What the Telescope Will See

9 August 2026 at 02:00

NASA is currently targeting August 30 for the launch of the Nancy Grace Roman Space Telescope from Florida. The date can move, as launch dates do, but the mission is close enough to the pad that its central idea deserves a clear look: Roman will survey huge stretches of the universe in one exposure, gathering […]

The post NASA Is Targeting an August Launch for Roman. Here’s What the Telescope Will See appeared first on Curiosmos.

NASA’s PUNCH Mission Predicted a Solar Storm Arrival Within 30 Minutes

8 August 2026 at 18:00

NASA says a new four-spacecraft mission has completed an early test that could make one of the hardest parts of space-weather forecasting much more precise: estimating when a solar eruption will reach Earth. In a proof-of-concept exercise announced on August 4, NASA’s PUNCH mission used continuous images of a coronal mass ejection, or CME, to […]

The post NASA’s PUNCH Mission Predicted a Solar Storm Arrival Within 30 Minutes appeared first on Curiosmos.

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