Are new stars on a horizon

What a great question!

The short answer is: no, new stars are not on the horizon.

Here's why:

Horizon: The horizon is the apparent line where the Earth's surface and the sky meet. It's the point where our line of sight is blocked by the curvature of the Earth.
Distance: Stars are incredibly far away from us. Even the nearest star, Proxima Centauri, is about 4.24 light-years away. That means that if we were to travel at the speed of light (approximately 186,282 miles per second), it would take over 4 years to reach Proxima Centauri.
Light travel time: When a new star is born, it takes time for its light to reach us. Since light travels at a finite speed, it takes time for us to see the star. This means that when we look at the sky, we're seeing the light from stars that are already millions or billions of years old.
Observational limitations: Even if a new star were to form right next to us, we wouldn't be able to see it immediately. Our telescopes and instruments have limitations in terms of resolution, sensitivity, and detection capabilities. It would take time for us to detect and confirm the existence of a new star.

So, to summarize, new stars are not on the horizon because:

The horizon is a local phenomenon, and stars are incredibly far away.
It takes time for light to travel from a new star to us, so we wouldn't see it immediately.
Our observational capabilities have limitations, making it difficult to detect new stars in real-time.

However, astronomers use various methods to detect and study new stars, such as:

Monitoring the brightness of known stars for changes that might indicate a new star is forming.
Using space-based telescopes like the Hubble Space Telescope or the James Webb Space Telescope to observe distant regions of space.
Analyzing data from surveys like the Sloan Digital Sky Survey (SDSS) or the Gaia spacecraft to identify new stars.

These methods allow us to discover new stars and learn more about the formation and evolution of stars in our universe.