Physics Can Eventually Explain Everything

New SpaceTime out Monday

SpaceTime 20250721 Series 28 Episode 87

New clues about why the universe exists

Scientists have cracked open the window into one of the ultimate questions of humanity – why the universe exists.

New study suggests liquid water could form on the Martian surface after all

A new study has found that it may be possible for brines of liquid water to form on the Martian surface as seasonal frost melts.

Witnessing the dawn of a new solar system for the first time

Astronomers have witnessed the birth of a new solar system for the first time. The observations reported in the journal Nature has allowed scientists to pinpoint the moment when planets began to form around a star beyond the Sun.

The Science Report

First humans born with three parents.

The future of smashed avocado might depend on preserving native vegetation alongside farmland.

A new study suggests man’s best friend really do judge people’s character.

Skeptics guide to Japan apocalypse prophecy

SpaceTime covers the latest news in astronomy & space sciences.

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SpaceTime -- A brief history

The Orion nebula

Jupiter-sized objects have been spotted floating by the James Webb Space Telescope unconnected to any star. What is intriguing is they seem to be in pairs of which around 40 have been detected. They've been nicknamed Jupiter Mass Binary Objects (JuMBOs).

One possibility is that they formed in regions of the nebula that lacked the density to give birth to stars. Another is that they were ejected from star systems due to gravity but neither provides a satisfactory explanation as to why they travel in pairs.

The Orion nebula

Jupiter-sized objects have been spotted floating by the James Webb Space Telescope unconnected to any star. What is intriguing is they seem to be in pairs of which around 40 have been detected. They've been nicknamed Jupiter Mass Binary Objects (JuMBOs).

One possibility is that they formed in regions of the nebula that lacked the density to give birth to stars. Another is that they were ejected from star systems due to gravity but neither provides a satisfactory explanation as to why they travel in pairs.

Here's a detailed explanation of its elements and their meaning:

* The Top Title: "Pour prouuer qu'il ne faut pas dessiner ny peindre come l'oeíl voit" (To prove that one should not draw or paint as the eye sees). This title is crucial. It suggests that the diagram is not showing how the eye naturally perceives reality (which is more complex and not strictly linear), but rather how one must construct a perspectival representation on a two-dimensional surface to give the illusion of depth, as if the eye were looking through a window. In other words, it's a demonstration of "artificial perspective" or "geometric perspective."

* The Vertical Wall/Plane on the Left (with letters and numbers): This represents a reference plane or a vertical "measuring scale." The letters (A, B, C, D, E, F, G, H, I, K) and numbers (1, 2, 3, 4, 5, 6, 7, 8) indicate points or units of measurement on this wall. This could be the back wall of a room or an imaginary vertical plane onto which heights are projected.

* The Floor/Horizontal Plane (with letters N, P, X, Y): This is the ground or floor plane. The lines originating from points on the vertical wall (like A, B, C, etc.) and extending to the right, intersecting the horizontal plane, show how distances on the floor diminish in perspective.

* The Dotted Lines (Projection Lines): These are the "visual rays" or "projection lines." They originate from various points on the vertical reference plane and the horizontal plane and converge towards a single point on the right, which is the observer's viewpoint.

* The Vanishing Point (Z): Point "Z," where all the dotted lines converge, is the vanishing point. It represents the position of the observer's eye (the figure on the right). It's the point on the horizon towards which all parallel lines in depth appear to converge.

* The Figure of the Man on the Right: This is the observer or the artist. His position and the height of his eye determine the vanishing point and, consequently, the perspective of the entire scene. The pointing hand suggests the act of "looking through" an imaginary plane.

* The Intermediate Vertical Plane (with letters Q, R, X, Y, P, N): This is the imaginary "window" or "picture plane." It's the surface onto which the artist is "drawing" the scene. Points Q, R, X, Y, P, N on this intermediate plane show where the visual rays intersect the picture surface. Notice how objects that are farther away (like point I or H on the back wall) appear smaller and closer to the vanishing point on the picture plane (like Q or R).

* Horizontal and Vertical Lines (parallel to the picture plane): The lines that intersect the intermediate plane (Q, R, X, Y, P, N) and are parallel to the left edge of the picture plane represent the heights and widths as they appear on the two-dimensional plane.

The conditions on earth that support the existence of life seem to be so fine-tuned that it led many scientists to believe that the universe had been designed by something or someone who paid that much attention to detail.

There are countless galaxies, stars, planets, moons etc. just in the visible universe which has been evolving for around 13.77 billion years but it is impossible to see anything past that point. The universe has potentially existed for longer, but we can't know for sure. The greater the distance the further back in time we are observing. Light just takes too long to get here. Everything we observe is in the past.

We have no way to prove life only exists on Earth. The same conditions could exist all over the universe but we might never know.

Center (RA, hms): 20h 19m 42.272s

Center (Dec, dms): +45° 11' 03.261"