Symbiotic stars, interacting binaries composed of a cool giant and a hot
compact companion, exhibit complex variability across the electromagnetic
spectrum. Over the past decades, large-scale photometric and spectroscopic
surveys from ground- and space-based observatories have significantly advanced
their discovery and characterization. These datasets have transformed the
search for new symbiotic candidates, providing extensive time-domain
information crucial for their classification and analysis. This review
highlights recent observational results that have expanded the known population
of symbiotic stars, refined classification criteria, and enhanced our
understanding of their variability. Despite these advances, fundamental
questions remain regarding their long-term evolution, mass transfer and
accretion processes, or their potential role as progenitors of Type Ia
supernovae. With ongoing and upcoming surveys, the coming years promise new
discoveries and a more comprehensive picture of these intriguing interacting
systems.

Cet article explore les excursions dans le temps et leurs implications.

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