Comprehensive coverage
Excavation site in the City of David showing signs of the earthquake that occurred in 750 BC (photo: Yohana Regev)

שיטות מדעיות מתקדמות איפשרו תיארוך נרחב ומדויק של ירושלים בתקופת ממלכת יהודה

החוקרים, ממכון ויצמן, אוניברסיטת תל אביב, רשות העתיקות, בר אילן ומוסדות נוספים מהעולם, התגברו על תופעת "הערים העתיקות" שאינן מסודרות בשכבות שמקשה על ארכאולוגים ברחבי העולם והציגו לראשונה תיארוך אבסולוטי של ירושלים בתקופת הברזל
A new species of dragonfly in Neot Smeder, photo - Itai Shani

A species of dragonfly common in the Arabian deserts was discovered in the steppe

Image: Horsehead Nebula (NASA Webb NIRCam): This image of the Horsehead Nebula, taken by NASA's James Webb Space Telescope, focuses on a portion of the "Horse's Mane" that is about 0.8 light-years across. It was taken using a camera Webb's NIRCam (near-infrared camera) The airy clouds at the bottom of the image are dominated by cold molecular hydrogen. Red streaks extending above the main nebula represent mostly atomic hydrogen gas in this region, known as the photodissociation region and from nearby masses creates a mostly neutral region of gas and dust between the fully ionized gas above and the cooler nebula below. As in many Webb images, distant galaxies are scattered in the background. This image consists of light at wavelengths of 1.4 and 2.5 microns (shown in blue), 3.0 and -3.23 µm (cyan), 3.35 µm (green), 4.3 µm (yellow), and 4.7 and 4.05 µm (red). Credit: NASA, ESA, CSA, K. MISSELT (UNIVERSITY OF ARIZONA) and A. ABERGEL (IAS/UNIVERSITY PARIS-SACLAY, CNRS)

The Horsehead Nebula in unprecedented detail from the James Webb Space Telescope observations

The painting by Rubens which was painted in 1625-1623 against the background of the 30 years war in Europe, and the image of the bee and the bat in it. Photo: Courtesy of the Alta Pincotec Museum, Munich.

The riddle of the bee and the bat

The polymer conjugated to the peptide and the drug (P-Esbp-DOX) binds to the E-selectin protein, which is expressed on the surface of endothelial cells that line the blood vessels in the tumor environment, enters the cells, releases the drug inside them and kills them.

inhibit the migration of cancer cells

The Cambrian Bang. Illustration: depositphotos.com

New findings regarding the connection between the increase of oxygen in the atmosphere and the development of complex life

From English Wikipedia, fair use poster, https://he.wikipedia.org/w/index.php?curid=1716268

Engineering failures and broken organizational culture through analysis of the Chernobyl series (2019)

Space and astronomy

Prof. Larry Wasserman at the Mitzpe Lovell Pavilion at the Solar Eclipse Viewing Festival in Waco, Texas, on April 8, 2024. Photo: Avi Blizovsky

April 8, 2024 Solar Eclipse: Interview with Larry Wasserman, Wall Observatory on Double Stars, Kuiper Belt and Carl Sagan 

The galaxy cluster Abel 2744 or the Pandora cluster. The researchers looked at the galaxies behind it. Photograph of the Hubble Space Telescope

The first light in the universe

Hubble Space Telescope image of the barred spiral galaxy UGC 12158. The majestic galaxy has a pinwheel shape consisting of bright blue stars surrounding a yellow-white concentration of central stars. This concentration has a diagonal line of stars across it, called a bar. The galaxy is tilted inward to our view from Earth. A white S-shaped line slightly across the top is the Hubble image of an asteroid hovering across the field of view.. It looks dashed because the image is a composite of several exposures of the asteroid flying like a race car. Credit: NASA, ESA, PG Martín (Autonomous University of Madrid), J. DePasquale (STScI). Credits: A. Filippenko (University of California, Berkeley)

Discovering new asteroids in old Hubble images

Sub categories

environment and energy

The climate crisis: if we are all to blame - then none of us is to blame. Image: depositphotos.com

Heat stress in the summer in Israel increases the risk of stroke, especially a week after its occurrence

The researchers placed artificial flowers in the area that contained mixtures of fragrances. A night moth approaches a cardboard flower that emits scents of the night candle Charles Hedgcock/University of Washington

Polluted floral scent

Drone photo of a disintegrating glacier. Illustration: depositphotos.com

The facts about climate and energy. Part a. The climate crisis is happening and man is causing it

Sub categories

Computing and technology

A street lit with petunia plants with gardens of fireflies. The illustration was prepared using DALEE and is not a scientific image.

Glowing Botany: Glow-in-the-dark petunias are coming to cities

The second revolution of spintronics. Illustration: depositphotos.com

The race for copper

Russian Uran-9 robots, tested in Syria. Source: National Interest

The robot war has begun

Sub categories

Biology and Medicine

Fish trip. Figure: The knowledge site using DALEE. The image is for illustration only and should not be considered a scientific image

Fish trip

Ozenfik weight loss shot. Illustrating the knowledge site using DALEE. The image should not be seen as a scientific image

What do the celebs know about weight loss shots that we should also know?

Muscle in the making: stem cells of muscle tissue (their nuclei are marked in blue) gradually change their structure and function and become mature muscle cells (the cells whose nuclei have turned red). These cells will eventually fuse into one long, multinucleated muscle cell. The ability of this muscle to contract is thanks to a large number of protein fibers produced in the mature muscle cells (marked in green)

How a muscle is born

Sub categories

Society and history

Pan flute player in the Hellenistic period. Credit: The Science website via DALEE. It should not be seen as a scientific picture

Ancient Jews Music 30: The wind instruments

Moses during the splitting of the Red Sea. Illustration: depositphotos.com

The tradition of the exodus from Egypt as the allochthonous (external) origin of the Israelites

the Golden calf. Illustration: depositphotos.com

We did not leave Egypt

Sub categories

Science in Israel

Demonstrations at Columbia University in New York, April 2024. Screenshot from YouTube, FIRSTSPOT

The heads of the universities in Israel: are concerned about the anti-Semitic attacks on campuses in the USA

EXPAND accelerator. Credit: Creation Space

A new accelerator will qualify Israeli startups to integrate into NASA's Artemis moon return program

Studying the reproductive timing of corals. The image was prepared using DALEE and should not be considered a scientific image

Citi coral and village coral

Sub categories

Science website logo
SEARCH