5 × 3 grid
Reels and rows describe the screen layout, not a promise about outcomes.
Starburst uses five reels and three rows. The official product description lists ten maximum paylines. A visible grid and the paths used to evaluate results are different things.
The star-shaped Starburst Wild can expand across an entire reel. It substitutes for ordinary paying symbols. Its behaviour therefore matters as much as its appearance.
The product description links an expanding Wild to a Respin. A Respin belongs to a game feature and is not a guaranteed gain. Read the particular edition's rules for its limits.
These points separate the practical questions raised by this subject. Read each one in the context of the conditions described above.
Reels and rows describe the screen layout, not a promise about outcomes.
The special star can cover its reel and act as a substitute symbol.
An additional spin associated with the Wild continues the feature sequence.

A star's expansion illustrates the feature's behaviour without revealing the following spin's outcome. Interpret results using the game's information and confirmation.
Other products may add words to the Starburst name. Do not assume that this explanation applies to every related title. Check the developer, full name and edition.
Distinguish original Starburst from differently named editions.
Inspect Wild and ordinary symbol behaviour.
Connect expansion and Respins using the rules.
Starburst is a NetEnt slot.
The official description lists five reels and three rows.
It can expand across its reel, substitute for paying symbols and trigger a Respin.
No. It is a game feature, not a guaranteed result.